Atoms, Isotopes & Ions; The Periodic Table - August 28th_29th (Workshop 2)

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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 1/28 Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) Due: 12:00am on Monday, December 12, 2022 You will receive no credit for items you complete after the assignment is due. Grading Policy Exercise 2.33 - Enhanced - with Feedback and Hints MISSED THIS? Read Section 2.3 (Page) ; Watch KCV 2.3 . The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1. A sample of sodium fluoride produced 29.7 of sodium upon decomposition. Part A How much fluorine (in grams) was formed? Express your answer to three significant figures. Hint 1. Identify the fraction representing the mass ratio To find the mass of fluorine formed in the decomposition of the sample, use the the given mass ratio as a conversion factor. Identify the fraction represented by a 1.21:1 mass ratio of sodium to fluorine in sodium fluoride. ANSWER: ANSWER: Correct To find the mass of fluorine formed in the decomposition, use the given mass ratio as a conversion factor. The mass ratio equates 1.21 grams of sodium for every 1 gram of fluorine. To convert the given mass of sodium ( ) to grams of fluorine, use dimensional analysis. Align the masses of sodium and fluorine so that grams of sodium cancel, leaving only the desired units of grams of fluorine. Exercise 2.46 - Enhanced - with Feedback and Hints MISSED THIS? Read the section 2.4 (Page) . Part A How many electrons are necessary to produce a charge of -1.1 ? Express your answer using two significant figures. Hint 1. Identify the charge of a single electron To calculate the number of electrons necessary to produce a charge of -1.1 , first you must identify the charge of a single electron. ANSWER: = 24.5
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 2/28 ANSWER: Correct The number of electrons necessary to produce a particular charge is determined by dividing the charge by the fundamental charge per electron. A single electron does not have a charge of 1 , but rather . Part B What is the mass of this many electrons? Express your answer using two significant figures. Hint 1. Identify the mass of a single electron To determine the mass of the electrons from Part A, identify the mass of a single electron. ANSWER: ANSWER: All attempts used; correct answer displayed The mass of a group of electrons can be determined by multiplying the number of electrons by the mass of an electron. Exercise 2.42 - Enhanced - with Feedback MISSED THIS? Read Section 2.5 (Page) . Part A Classify the following statements as consistent or inconsistent with Rutherford's nuclear theory as it was originally stated. ANSWER: = 6.9×10 18 = 6.3×10 −9
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 3/28 All attempts used; correct answer displayed Although Rutherford's nuclear model of the atom was a significant advance in the development of descriptions of atomic structure, it left many questions unanswered such as how to account for the total mass of an atom. The existence and characterization of the proton and the neutron at a later date answered many of these questions. However, the list of particles that make up the nucleus is very large and continues to grow as new particles are characterized by current experiments in atomic physics. Part B Complete the sentences to explain your answers. ANSWER: Answer Requested According to Rutherford’s nuclear theory, 1. most of the atom’s mass and all of its positive charge are contained in a small core called the nucleus; 2. most of the volume of the atom is empty space, throughout which tiny, negatively charged electrons are dispersed; and 3. there are as many negatively charged electrons outside the nucleus as there are positively charged particles (named protons) within the nucleus, so that the atom is electrically neutral. Rutherford’s nuclear theory was a success and is still valid today. The revolutionary part of this theory is the idea that matter is much less uniform than it appears. Reset Help Reset Help the same as mass empty space negatively charged positively charged more than dense less than particles According to Rutherford's nuclear theory, the core of an atom (nucleus) contains most of the mass of an atom and is positively charged , so the majority of the mass of a fluorine atom cannot be due to its nine electrons. According to Rutherford's nuclear theory, the number of negatively charged particles outside the nucleus is the same as the number of positively charged particles within the nucleus, so a nitrogen atom has 7 protons and 7 electrons, while a phosphorous atom cannot have 15 protons and 150 electrons. According to Rutherford's nuclear theory, most of the volume of an atom is empty space , so the volume of a hydrogen atom cannot be mostly due to the proton. A nitrogen atom has seven protons in its nucleus and seven electrons outside of its nucleus. Since electrons are smaller than protons, and since a hydrogen atom contains only one proton and one electron, it must follow that the volume of a hydrogen atom is mostly due to the proton. A phosphorus atom has 15 protons in its nucleus and 150 electrons outside of its nucleus. The majority of the mass of a fluorine atom is due to its nine electrons. Consistent Inconsistent
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 4/28 Exercise 2.48 - Enhanced - with Feedback MISSED THIS? Read Section 2.4 (Page) , 2.5 (Page) . Part A Which of the following statements about subatomic particles are true, and which are false? Drag the appropriate items to their respective bins. ANSWER: Correct Protons and neutrons are about the same size and are present in the nuclei of atoms. Electrons orbit the nucleus and have a negative charge, as opposed to the positive charge of protons. Exercise 2.52 - Enhanced - with Feedback MISSED THIS? Read Section 2.6 (Page) ; Watch KCV 2.6 . Enter isotopic symbols of the form for each isotope. Part A the magnesium isotope with 14 neutrons Express your answer as an isotope. ANSWER: Correct Isotopes use the notation , where is the chemical symbol or name, is the atomic number, and is the mass number. The mass number is the sum of the number of protons and the number of neutrons. The number of neutrons in an isotope is therefore the difference between the mass number and the atomic number ( ), so the value of can be calculated as follows: The magnesium isotope with 14 neutrons is . Reset Help Protons have about the same mass as neutrons. Protons and electrons have charges of the same magnitude but opposite sign. Protons and neutrons have charges of the same magnitude but opposite sign. Some atoms don't have any protons. True False
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 5/28 Part B the copper isotope with 36 neutrons Express your answer as an isotope. ANSWER: Correct The number of neutrons in an isotope is the difference between the mass number and the atomic number ( ). The value of can be calculated as follows: The copper isotope with 36 neutrons is . Part C the aluminum isotope with 15 neutrons Express your answer as an isotope. ANSWER: Correct The number of neutrons in an isotope is the difference between the mass number and the atomic number ( ). The value of can be calculated as follows: The aluminum isotope with 15 neutrons is . Part D the iodine isotope with 74 neutrons Express your answer as an isotope. ANSWER: Correct The number of neutrons in an isotope is the difference between the mass number and the atomic number ( ). The value of can be calculated as follows: The aluminum isotope with 74 neutrons is . Exercise 2.53 - Enhanced - with Feedback and Hints MISSED THIS? Read Section 2.6 (Page) ; Watch KCV 2.6 , IWE 2.3 . Determine the number of protons and neutrons in each of the following isotopes. Part A Express your answers as integers. Enter your answers separated by a comma. Hint 1. Determine the meaning of the numbers in isotope notation To find the number of protons and neutrons using the chemical symbol ( , , , or ), determine what the meaning of the numbers in isotope notation is. Recall that the nucleus is composed of protons and neutrons, and the mass of the nucleus is determined by the total numbers of protons and neutrons. ANSWER:
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 6/28 Correct The nucleus is composed of protons and neutrons. What makes an atom unique is the number of protons, which is called the atomic number. The atomic number, therefore, has to be specified in the notation for isotopes. Since the nucleus is composed of protons and neutrons, its mass is the sum of masses of protons and neutrons. Therefore, the mass number of an isotope should be greater than or equal to the atomic number. In almost all isotopes, the upper value is greater than the lower one. Therefore, is the mass number , and is the atomic number . ANSWER: Correct Protons are charged particles that compose the nucleus and provide its positive charge. The number of protons corresponds to the atomic number of the atom. The atomic number of the atom appears to the lower left of the atomic symbol. Therefore, the number of protons in is Neutrons are neutrally charged particles that together with protons provide the mass of the nucleus. The mass number of a nucleus is the sum of the number of protons and the number of neutrons. The mass number appears to the upper left of the atomic symbol. Therefore, the number of neutrons in is Part B Express your answers as integers. Enter your answers separated by a comma. Hint 1. Determine the meaning of the numbers in isotope notation To find the number of protons and neutrons using the chemical symbol ( , , , or ), determine what the meaning of the numbers in isotope notation is. Recall that the nucleus is composed of protons and neutrons, and the mass of the nucleus is determined by the total numbers of protons and neutrons. ANSWER: ANSWER: , where is mass number and is atomic number , where is mass number and is number of neutrons , where is atomic number and is mass number , where is number of neutrons and is atomic number , = 7,7 protons, neutrons , where is atomic number and is mass number , where is mass number and is number of neutrons , where is number of neutrons and is atomic number , where is mass number and is atomic number , = 12,13 protons, neutrons
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 7/28 Correct Protons are charged particles that compose the nucleus and provide its positive charge. The number of protons corresponds to the atomic number of the atom. The atomic number of the atom presents to the lower left of the atomic symbol. Therefore, the number of protons in is Neutrons are neutrally charged particles that together with protons provide the mass of the nucleus. The mass number of a nucleus is the sum of the number of protons and the number of neutrons. The mass number presents to the upper left of the atomic symbol. Therefore, the number of neutrons in is Part C Express your answers as integers. Enter your answers separated by a comma. Hint 1. Identify the equation to calculate the number of neutrons Which of the following equations can be used to calculate the number of neutrons in the isotope? ANSWER: ANSWER: Correct The number of protons corresponds to the atomic number, lower left of the atomic symbol, of the atom. Therefore, the number of protons in is The mass number of a nucleus , upper left of the atomic symbol, is the sum of the number of protons and the number of neutrons in the nucleus. Therefore, the number of neutrons in is Part D Express your answers as integers. Enter your answers separated by a comma. Hint 1. Identify the equation to calculate the number of neutrons Which of the following equations can be used to calculate the number of neutrons in the isotope? ANSWER: number of neutrons = mass number + atomic number atomic number mass number mass number atomic number mass number , = 84,124 protons, neutrons
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 8/28 ANSWER: Correct The number of protons corresponds to the atomic number of the atom. Therefore, the number of protons in is The mass number of a nucleus is the sum of the number of protons and the number of neutrons. Therefore, the number of neutrons in is Exercise 2.57 - Enhanced - with Feedback and Hints MISSED THIS? Read Section 2.6 (Page) ; Watch KCV 2.6 , IWE 2.3 . Determine the number of protons and electrons in each of the following ions. Part A Express your answers as integers. Enter your answers separated by a comma. Hint 1. Determine the criteria for charge in an ion Complete the following sentences to determine the difference in protons and electrons. Then apply the definitions to the given ions to determine the number of protons and electrons. Match the words in the left column to the appropriate blanks in the sentences on the right. ANSWER: number of neutrons = mass number atomic number atomic number mass number mass number mass number + atomic number , = 79,117 protons, neutrons Reset Help is neutral electrons protons neutrons negative carries a charge positive The number of protons for an atom is the same as the atomic number. For an atom that is neutral , the number of protons is the same as the number of electrons. An ion forms by gaining or losing electrons . The number of protons does not change. A cation is an ion that has lost electrons and has a positive charge. An anion is an ion that has gained electrons and has a negative charge.
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 9/28 ANSWER: Correct The number of protons for an atom is the same as its atomic number found on the periodic table. For a neutral atom, the number of electrons is the same as the number of protons. An ion forms by either gaining or losing electrons. A cation forms when an atom loses one or more electrons to develop a positive charge. The periodic table shows that the atomic number for is 29. Therefore, the cation has 29 protons. The 2+ charge indicates that the cation has lost 2 electrons; therefore, has 27 electrons. Part B Express your answers as integers. Enter your answers separated by a comma. Hint 1. Determine the criteria for charge in an ion Complete the following sentences to determine the difference in protons and electrons. Then apply the definitions to the given ions to determine the number of protons and electrons. Match the words in the left column to the appropriate blanks in the sentences on the right. ANSWER: ANSWER: Correct The number of protons for an atom is the same as its atomic number, which is found on the periodic table. For a neutral atom, the number of electrons is the same as the number of protons. An ion forms by either gaining or losing electrons. An anin forms when an atom gains one or more electrons to develop a negative charge. The periodic table shows that the atomic number for is 16. Therefore, the anion has 16 protons. The 2- charge indicates that the ion has gained 2 electrons; therefore, has 18 electrons. Part C Express your answers as integers. Enter your answers separated by a comma. Hint 1. Determine the criteria for charge in an ion Complete the following sentences to determine the difference in protons and electrons. Then apply the definitions to the given ions to determine the number of protons and electrons. Match the words in the left column to the appropriate blanks in the sentences on the right. , = 29,27 protons, electrons Reset Help is neutral protons positive electrons neutrons negative carries a charge The number of protons for an atom is the same as the atomic number. For an atom that is neutral , the number of protons is the same as the number of electrons. An ion forms by gaining or losing electrons . The number of protons does not change. A cation is an ion that has lost electrons and has a positive charge. An anion is an ion that has gained electrons and has a negative charge. , = 16,18 protons, electrons
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 10/28 ANSWER: ANSWER: Correct The periodic table shows that the atomic number for is 35. Therefore, the anion has 35 protons. A neutral atom has the same number of protons and electrons; however, the 1- charge indicates that the ion has gained 1 electron. The anion has 36 electrons. Part D Express your answers as integers. Enter your answers separated by a comma. Hint 1. Determine the criteria for charge in an ion Complete the following sentences to determine the difference in protons and electrons. Then apply the definitions to the given ions to determine the number of protons and electrons. Match the words in the left column to the appropriate blanks in the sentences on the right. ANSWER: Reset Help negative positive neutrons carries a charge protons is neutral electrons The number of protons for an atom is the same as the atomic number. For an atom that is neutral , the number of protons is the same as the number of electrons. An ion forms by gaining or losing electrons . The number of protons does not change. A cation is an ion that has lost electrons and has a positive charge. An anion is an ion that has gained electrons and has a negative charge. , = 35,36 protons, electrons Reset Help neutrons positive electrons is neutral negative protons carries a charge The number of protons for an atom is the same as the atomic number. For an atom that is neutral , the number of protons is the same as the number of electrons. An ion forms by gaining or losing electrons . The number of protons does not change. A cation is an ion that has lost electrons and has a positive charge. An anion is an ion that has gained electrons and has a negative charge.
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 11/28 ANSWER: Correct The periodic table shows that the atomic number for is 24. Therefore, the cation has 24 protons. A neutral atom has the same number of protons and electrons; however, the 3+ charge indicates that the ion has lost 3 electrons. The anion has 21 electrons. Exercise 2.59 - Enhanced - with Feedback and Hints MISSED THIS? Read Section 2.7 (Page) . Predict the charge of the ion formed by each of the following elements. Part A Express your answer as an ion. Hint 1. Determine the nearest noble gas for an atom Elements that form ions with predictable charges tend to lose or gain electrons to reach the number of electrons as in the nearest noble gas. To determine the charge of an atom in the ion, first determine the number of electrons in that atom and then find the nearest noble gas and determine its number of electrons. Enter the number of electrons in the noble gas nearest to the atom . Express your answer as an integer. ANSWER: Incorrect; Try Again; 5 attempts remaining ANSWER: Correct The element is a main-group nonmetal and tends to gain electrons to form an anion with the same number of electrons as the nearest noble gas. The nearest noble gas is and it has 18 electrons. The atom has 16 electrons. The number of electrons the atom is going to gain is 2. Therefore, the charge of this ion will be 2 and the correct notation for an ion is . Part B Express your answer as an ion. Hint 1. Determine the nearest noble gas for an atom Elements that form ions with predictable charges tend to lose or gain electrons to reach the number of electrons as in the nearest noble gas. To determine the charge of an atom in the ion, first determine the number of electrons in that atom and then find the nearest noble gas and determine its number of electrons. Enter the number of electrons in the noble gas nearest to the atom . Express your answer as an integer. ANSWER: ANSWER: , = 24,21 protons, electrons 18 electrons 2 electrons
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 12/28 Correct The element is a main-group metal and tends to lose electrons to form a cation with the same number of electrons as the nearest noble gas. The nearest noble gas is , and it has 2 electrons. The atom has 3 electrons. The number of electrons the atom is going to lose is 1. Therefore, the charge of this ion will be 1+ and the correct notation for an ion is . Part C Express your answer as an ion. Hint 1. Determine the nearest noble gas for an atom Elements that form ions with predictable charges tend to lose or gain electrons to reach the number of electrons as in the nearest noble gas. To determine the charge of an atom in the ion, first determine the number of electrons in that atom and then find the nearest noble gas and determine its number of electrons. Enter the number of electrons in the noble gas nearest to the atom . Express your answer as an integer. ANSWER: ANSWER: Correct The element is a main-group metal and tends to lose electrons to form a cation with the same number of electrons as the nearest noble gas. The nearest noble gas is and it has 36 electrons. The atom has 38 electrons. The number of electrons the atom is going to lose is 2. Therefore, the charge of this ion will be 2+ and the correct notation for an ion is . Part D Express your answer as an ion. Hint 1. Determine the nearest noble gas for an atom Elements that form ions with predictable charges tend to lose or gain electrons to reach the number of electrons as in the nearest noble gas. To determine the charge of an atom in the ion, first determine the number of electrons in that atom and then find the nearest noble gas and determine its number of electrons. Enter the number of electrons in the noble gas nearest to the atom . Express your answer as an integer. ANSWER: ANSWER: Correct The element is a main-group metal and tends to lose electrons to form a cation with the same number of electrons as the nearest noble gas. The nearest noble gas is and it has 36 electrons. The atom has 37 electrons. The number of electrons the atom is going to lose is 1. Therefore, the charge of this ion will be 1+ and the correct notation for an ion is . Exercise 2.70 - Enhanced - with Feedback 36 electrons 36 electrons
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 13/28 MISSED THIS? Read Section 2.7 (Page) ; Watch KCV 2.7 . Part A Which of the following pairs of elements do you expect to be most similar? ANSWER: Correct Lithium ( ) and Sodium ( ) are elements that form most often with a positive charge of 1+, making them the most similar. Part B Explain why lithium and sodium are the most similar and the other pairs are not. Match the words in the left column to the appropriate blanks in the sentences on the right. ANSWER: Answer Requested The periodic table is organized by element type and similarity. The left side is composed of main-group metal elements. The center elements are known as transition metals. A stair-step line of elements called metalloids separate the transition metals and nonmetals. The most similar elements are shown in columns, or groups. Lithium and sodium are most similar because they both belong to group 1A. Exercise 2.72 - Enhanced - with Feedback MISSED THIS? Read Section 2.8 (Page) . Magnesium has three naturally occurring isotopes with the following masses and natural abundances: Isotope Mass Abundance (%) -24 23.9850 78.99 -25 24.9858 10.00 germanium and arsenic argon and bromine lithium and sodium nitrogen and oxygen titanium and gallium Reset Help metalloid transition metal period nonmetal main-group metal group Lithium and sodium are the most similar because they are both main-group metal elements located in the same group , and therefore have similar properties. Nitrogen and oxygen are not the most similar because although they are both nonmetal elements, are each located in a different group . Titanium and gallium are not the most similar because titanium is a transition metal and gallium is a main-group metal . Germanium and arsenic are not the most similar because although they are both metalloid elements, they are each located in a different group . Argon and bromine would not be the most similar because although they are both nonmetal elements, they are each located in a different group .
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 14/28 -26 25.9826 11.01 Part A Choose the sketch of the mass spectrum of magnesium. ANSWER: Correct The position of each peak on the x axis of the mass spectrum indicates the mass of the isotope that was ionized, and the intensity (indicated by the height of the peak) indicates the relative abundance of that isotope. The natural abundance of -24 is higher than that of -25 and -26. The intensity of the peak indicating the abundance of -24 is set to 100 , and the intensity of the other peaks is reported relative to the most intensive one. Exercise 2.75 - Enhanced - with Feedback and Hints MISSED THIS? Read Section 2.8 (Page) ; Watch IWE 2.5 . An element has two naturally occurring isotopes. Isotope 1 has a mass of 190.9606 and a relative abundance of 37.3 , and isotope 2 has a mass of 192.9629 . Part A Find the atomic mass of this element.
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 15/28 Express your answer using four significant figures. Hint 1. Calculate the relative abundance of the second isotope To calculate the atomic mass of an element that has two isotopes, the relative abundance of both isotopes should expressed in decimal form, as they both contribute to the atomic mass. Given that the relative abundance of one isotope in this example is 37.3 and the sum of abundances of both isotopes equals 100 , calculate the relative abundance of the second isotope and express it in decimal form. Express your answer numerically to three significant figures. ANSWER: ANSWER: Correct The atomic mass of the element represents the average mass of the isotopes that compose that element. First, find the relative abundance of the second isotope, given that the sum of relative abundances equals 100 : In this example, the percent value has to be converted to the corresponding decimal value. Then atomic mass can be calculated as follows: Part B By comparison to the periodic table, identify this element. Express your answer as a chemical symbol. ANSWER: Correct The atomic mass of the element appears in the periodic table above the chemical symbol of the element. The chemical element with the atomic mass of ansa is (iridium). Exercise 2.80 - Enhanced - with Feedback MISSED THIS? Read Section 2.8 (Page) ; Watch IWE 2.5 . Part A Use the mass spectrum of rubidium to determine the atomic mass of rubidium. 0.627 = 192.2
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 16/28 Express your answer with the appropriate units. ANSWER: Correct Despite the signal values, they all compose the total signal of the sample. The relative percentages should be summed, and actual abundance percentages should be recalculated to correctly obtain the weighted average. Finding a signal intensity of 100. for and 40. for would result in a total intensity of 140. for each. Then Once the percent abundance for each isotope is calculated from the mass spectrum, they can be used to calculate weighted average for each isotope in the sample. Exercise 2.108 - Enhanced - with Feedback A penny has a thickness of approximately 1.0 . Part A If you stacked Avogadro's number of pennies one on top of the other on Earth's surface, how far would the stack extend (in kilometers)? [For comparison, the sun is about 150 million from Earth and the nearest star (Proxima Centauri) is about 40 trillion from Earth.] Express your answer using four significant figures. ANSWER: Correct Since the thickness of the penny is given in millimeters, you needed to start by converting 1.0 to (using ). Avogadro's number of pennies would then be high. Exercise 2.83 - Enhanced - with Feedback and Hints MISSED THIS? Read Section 2.9 (Page) ; Watch KCV 2.9 . What is the amount, in moles, of each of the following substances? Part A 12.8 Hint 1. Determine the conversion factor for the problem 85.6 6.022×10 17
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 17/28 To convert from grams to number of moles , a conversion factor based on the atomic mass of the atom must be determined. Choose the correct conversion factor to calculate the number of moles of from its mass. ANSWER: ANSWER: Correct The atomic mass of any element can be used to create a conversion factor between the mass (in grams) of that element and the amount (in moles) of that element. In this case, Part B 3.85 Hint 1. Determine the conversion factor for the problem To convert from grams to number of moles , a conversion factor based on the atomic mass of the atom must be determined. Choose the correct conversion factor to calculate the number of moles of from its mass. ANSWER: ANSWER: Correct The atomic mass of any element can be used to create a conversion factor between the mass (in grams) of that element and the amount (in moles) of that element. In this case, Part C 26.6 0.320 5.89×10 −2
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 18/28 Hint 1. Determine the conversion factor for the problem To convert from grams to number of moles , a conversion factor based on the atomic mass of the atom must be determined. Choose the correct conversion factor to calculate the number of moles of from its mass. ANSWER: ANSWER: Correct The atomic mass of any element can be used to create a conversion factor between the mass (in grams) of that element and the amount (in moles) of that element. In this case, Part D 0.213 Hint 1. Determine the conversion factor for the problem Choose the correct conversion factor to calculate the number of moles of from its mass. ANSWER: ANSWER: All attempts used; correct answer displayed The atomic mass of any element can be used to create a conversion factor between the mass (in grams) of that element and the amount (in moles) of that element. In this case, Exercise 2.85 - Enhanced - with Feedback and Hints 0.147 3.07×10 −2
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 19/28 MISSED THIS? Read Section 2.9 (Page) ; Watch KCV 2.9 , IWE 2.8 . Part A How many silver atoms are there in 3.82 of silver? Express your answer using three significant figures. You did not open hints for this part. ANSWER: Exercise 2.87 - Enhanced - with Feedback and Hints MISSED THIS? Read Section 2.9 (Page) ; Watch KCV 2.9 , IWE 2.8 . How many atoms are there in each of the following substances? Part A 5.26 Express your answer using three significant figures. You did not open hints for this part. ANSWER: Part B 2.36 Express your answer using three significant figures. You did not open hints for this part. ANSWER: Part C 1.91 Express your answer using three significant figures. You did not open hints for this part. ANSWER: Part D 8.6×10 −2 Express your answer using two significant figures. You did not open hints for this part. ANSWER: Exercise 2.93 - Enhanced - with Feedback and Hints = = = = =
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 20/28 MISSED THIS? Read Section 2.9 (Page) ; Watch KCV 2.9 , IWE 2.8 . Part A Calculate the mass, in grams, of a single platinum atom ( = 195.08 ). Express your answer using four significant figures. You did not open hints for this part. ANSWER: Exercise 2.112 - Enhanced - with Feedback and Hints Part A A pure titanium cube has an edge length of 2.63 . How many titanium atoms does it contain? Titanium has a density of . Express your answer in atoms to three significant figures. You did not open hints for this part. ANSWER: Incorrect; Try Again; 5 attempts remaining Chapter 2 Algorithmic Question 6 Part A Identify the element that has an atomic number of 70. ANSWER: Correct Chapter 2 Algorithmic Question 5 = bromine lithium ytterbium gallium mercury
8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 21/28 Part A Identify the charges of the protons, neutrons, and electrons. ANSWER: Correct Chapter 2 Algorithmic Question 9 Part A An atom of 131 I contains ________ electrons. ANSWER: Correct Chapter 2 Algorithmic Question 16 Part A A cation is __________. ANSWER: Correct protons 0, neutrons -1, electrons +1 protons +1, neutrons 0, electrons -1 protons +1, neutrons +1, electrons +1 protons -1, neutrons 0, electrons -1 protons 0, neutrons 0, electrons 0 78 184 53 131 124 an atom that has lost a proton and a neutron an atom that has gained a neutron and an electron an atom that has lost a proton an atom that has lost an electron an atom that has gained a proton
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 22/28 Chapter 2 Algorithmic Question 18 Part A How many electrons does the P 3- ion possess? ANSWER: Correct Chapter 2 Algorithmic Question 24 Part A Which element has the chemical symbol, Sc? ANSWER: Correct Chapter 2 Algorithmic Question 34 Part A The mass number of an atom of 80 Br is ________. ANSWER: 6 8 18 15 12 mercury silicon samarium iron scandium
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 23/28 Correct Chapter 2 Algorithmic Question 33 Part A An atom of 17 O contains ________ neutrons. ANSWER: Correct Chapter 2 Algorithmic Question 47 Part A Which of the following elements is a metal? ANSWER: Correct Chapter 2 Algorithmic Question 49 115 35 80 73 45 11 17 8 9 25 Ge Ne Ag O Cl
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 24/28 Part A Which of the following elements is a noble gas? ANSWER: Correct Chapter 2 Algorithmic Question 53 Part A Which of the following elements is an alkaline earth metal? ANSWER: Correct Chapter 2 Algorithmic Question 52 Part A Which of the following elements is a alkali metal? ANSWER: Correct O I He Ge Fe F N Sr Pu Cs Rb Cl N Mg Ac
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 25/28 Chapter 2 Multiple Choice Question 43 Part A Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the following masses and natural abundances: X-45 44.8776 amu 32.88% X-47 46.9443 amu 67.12% ANSWER: Correct Exercise 2.123 - Enhanced - with Feedback Pure gold is usually too soft for jewelry, so it is often alloyed with other metals. Part A How many gold atoms are in a 0.331 ounce, 18 gold bracelet? (18 gold is 75% gold by mass.) Express your answer using two significant figures. ANSWER: Correct Because pure gold is too soft for everyday wear, gold jewelry often also contains other metals, such as silver, copper, nickel, or zinc, to make the piece more durable. The karatage shows how much of the metal is pure gold, compared to other metals. 24 is 100% gold, while 18 is 75% gold and 14 is 58.3% gold. In this problem, you should start by converting the mass in ounces into grams: Next, calculate the mass of pure gold in the bracelet by using the formula Convert between the mass of an element in grams and the number of atoms of the element by first converting to moles (using the molar mass) and then to the number of atoms (using Avogadro's number): Exercise 2.127 The ratio of oxygen to nitrogen by mass in is 2.29. The ratio of chlorine to nitrogen by mass in is 7.61. Part A Find the ratio of oxygen to chlorine by mass in . 44.99 amu 46.34 amu 46.84 amu 46.26 amu 45.91 amu = 2.2×10 22 atoms
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 26/28 ANSWER: Correct Chapter 2 Algorithmic Question 77 Part A Which of the following contains the fewest atoms? You shouldn't need to do a calculation here. ANSWER: Correct Chapter 2 Algorithmic Question 79 Part A Calculate the mass (in g) of 2.0 × 10 24 atoms of Pt. ANSWER: Correct Chapter 2 Algorithmic Question 83 Part A How many moles are in 2.16 × 10 24 atoms of copper? = 0.226 10.0 g Mg 10.0 g Cs 10.0 g Ca 10.0 g Rb 10.0 g He 2.3 × 10 2 g 6.5 × 10 2 g 4.1 × 10 2 g 1.6 × 10 2 g 3.3 × 10 2 g
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 27/28 ANSWER: Correct Chapter 2 Algorithmic Question 88 Part A What mass (in kg) does 4.41 moles of copper have? ANSWER: Correct Chapter 2 Algorithmic Question 91 Part A Which of the following is equal to exactly Avogadro's number of atoms? ANSWER: Correct Chapter 2 Multiple Choice Question 48 35.9 moles 0.90 moles 0.359 moles 3.59 moles 7.18 moles 0.820 kg 0.352 kg 0.122 kg 0.018 kg 0.280 kg 6.00 grams of carbon 34.00 grams of selenium 12.01 grams of carbon 12.31 grams of magnesium 35.38 grams of zinc
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8/30/22, 12:33 PM Atoms, Isotopes & Ions; The Periodic Table - August 28th/29th (Workshop 2) https://session.masteringchemistry.com/myct/assignmentPrintView?assignmentID=11146317 28/28 Part A How many iron atoms are contained in 354 g of iron? ANSWER: Correct For Practice 2.6 - Enhanced - with Feedback Part A A pure silver ring contains silver atoms. How many moles of silver atoms does it contain? Express the number of moles to two significant figures. ANSWER: Answer Requested Avogadro's number, 6.022×10 23 , is used to convert between the number of moles and the number of atoms, molecules, particles, etc. The number of silver atoms divided by Avogadro's number yields the number of moles of silver. Score Summary: Your score on this assignment is 74.0%. You received 29.6 out of a possible total of 40 points. 4.69 × 10 24 Fe atoms 2.62 × 10 25 Fe atoms 2.13 × 10 26 Fe atoms 9.50 × 10 22 Fe atoms 3.82 × 10 24 Fe atoms amount = 3.7×10 −2
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Course Home b Details | bartleby G indivuials with austium good to O X A openvellum.ecollege.com/course.html?courseld=16561285&OpenVellumHMAC=446c877376a9bc7ac878d8ad119f4717#10001 8 : E Apps G Gmail YouTube O Maps E Connect - To Do As. O ocCC Moodle P chem work b help Balance Chemical E. Problem 11.7 - Enhanced - with Feedback 2 of 13 > Syllabus I Review | Constants | Periodic Table Scores Give the IUPAC name for each of the following alkanes and cycloalkanes. еТext Part A Document Sharing User Settings Course Tools > Spell out the full name of the compound. Submit Request Answer Part B НаС — СН — СH2 — CH — CH Spell out the full name of the compound. Submit Request Answer Part C Spell out the full name of the compound. P Pearson 10:38 PM P Type here to search 99+ 3/2/2021 近
me File Edit View History Bookmarks People Tab Window Help HCc Dashboar x E Buy Essay x 5% O G find some x © Periodic A ALEKS - J X HUc Chapter 5 x G convert C A www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IQİHQRDYV_6Ux63SypJXz0Coxvwqgg4JkWI74Meq7fCi1Pj.. O GASES Search Calculating partial pressure in a gas mixture S jacquehr mail.goo Jacqueline Profile - web.robl Cuteding of the mi A 9.00 L tank at 3.36 °C is filled with 13.2 g of boron trifluoride gas and 9.61 g of dinitrogen difluoride gas. You can assume both gases behave as ideal gases under these conditions. R Calculate the mole fraction and partial pressure of each gas, and the total pressure in the tank. Round each of your answers to 3 significant digits. Virtual E R - Roblox web.robl Virtual B group on mole fraction: dh boron trifluoride Manage appleid.a Your App partial pressure: | atm le for account mole fraction: dinitrogen diffluoride ble to partial pressure: ||atm Total pressure in tank: | atm ranscrip…
A Dash x S All al x S Scho x A Stud x Clev X O 21-2. X O Quiz x M Inbo x M Miss * humble.schoology.com/attachment/2000253919/docviewer 2 /2 158% O IH 3. Answer the following short answer questions. 1) List three elements that would react similar to calcium? 2) A vertical column of elements in the Periodic Table is known as a: 3) How many metalloids total are there on the periodic table? 4) Which subgroup on the periodic table are the most active metals found? 5) The electrons found on the outer most energy shell of an atom that are used for bonding are known as: 6) This subgroup of elements are not found pure in nature, and in their pure form can exist as diatomic mole 7) List the atomic numbers of the elements that would have similar properties to tellurium:
A openvellum.ecollege.com I Review I Constants I Periodic Tabl MISSED THIS? Read Section 5.9 (Pages 193 - 201). Text Activity series of metals Part A + K* (aq) +e K(s) Ca(s) → Ca²+(aq) + 2e Na(s) + Na* (aq) + e¯ Mg(s) → Mg²+(aq) + 2e¯ ea Most reactive Which metal in the activity series is oxidized with a Nat solution but not with a K+ solution? at Sharing Express your answer as a chemical formula. • View Available Hint(s) ings Al(s) → Al³+ (aq) + 3e¯ Mn(s) → Mn²+(aq) + 2e → Zn²+(aq) + 2e pols ΑΣφ Zn(s) + Cr*+ (aq) + 3e Fe2+ (aq) + 3e + Ni²+ (aq) + 2e + Sn2+ (aq) + 2e Cr(s) Fe(s) A chemical reaction does not occur for this question. Ni(s) Submit Sn(s) Pb(s) → Pb²+ (aq) + 2e < Return to Assignment Provide Feedback H2 (g) + 2H+ (aq) + 2e Cu(s) → Cu²+(aq) + 2e Ag(s) → Ag+(ag) + e Au(s) → Au3+ (a) + 3e Least reactive P Pearson Copyright © 2021 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy I Permissions | Contact Us I
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Oklahoma State University-OX - myOKState - Oklahoma City - Video - Ch 4 pt 5 - Periodic t x 2 MasteringChemistry: Chapter x 9 Periodic Table of the Element x Ô https://session.masteringchemistry.com/myct/itemView?offset-Dnext&assignmentProblemID=182942327 Chapter 4 roblem 4.76 - Enhanced - with Feedback 25 of 2 II Review | Constants | Periodic In plants, potassium is needed for metabolic. processes including the regulation of plant growth. Potassium (K) is required by plants for protein synthesis, photosynthesis, enzymes, and ionic balance. Potassium-deficient potato plants may show purple or brown spots and plant, root, and seed growth is reduced. John has noticed that the leaves of his recent crop of potatoes had brown spots, the potatoes were undersized, and the crop yield was low. Part E If John's potato farm has an area of 30.5 hectares, how many pounds of fertilizer does John need to use? Express your answer to two significant figures and include the appropriate units. Tests on…
Course Home b Details | bartleby G indivuials with austium good to O X A openvellum.ecollege.com/course.html?courseld=16561285&OpenVellumHMAC=446c877376a9bc7ac878d8ad119f4717#10001 E Apps G Gmail YouTube O Maps E Connect - To Do As.. O OCCC Moodle P chem work b help Balance Chemical E. Aldehyde or Ketone? - Copy 7 of 13 > Syllabus I Review | Constants | Periodic Table Scores There are two classes of carbonyl compounds: aldehydes and ketones. Aldehydes have at least one hydrogen atom attached to the carbonyl carbon, which еТext means that C=0 must appear at the end of a carbon chain. Ketones do not have any hydrogen atoms attached to the carbonyl carbon because C=0 occurs between alkyl groups. Document Sharing User Settings Part A Course Tools > Classify the following line-bond formulas as ketones or aldehydes. (Remember that carbon must have 4 bonds. If a line-angle formula shows a carbon atom with only three bonds, the missing fourth bond is understood to go to a hydrogen atom.) Drag…
Mr. Jcvon MMerton Search Chem.111-2 Fall 2020- 14iord Help Find S Replace 日B Mailings Review View References amakery =、m。 新。 /ME/2U |. AaBbCcD AaBbCcDc AaBbC AABBCCC A aB Title T Normal T No Spac. Heading 1 Heading 2 ఛా A Select ,~可|,三|三三三 Styles Font Paragraph 5.Identify the atom or ion corresponding to each of the following descriptions: I) [Kr]4d10°s²5p!; ï) an ion with a charge of -2 and ground state electron configuration [Ar]3d: i1) What element is isoelectronic with S- Write its electronic configuration usıng the noble gas core
Report Sheet: Exp. 15: PERIODIC PROPERTIES NOTE: All chemical equations must be balanced and must include physical states or phases. Name of partner: I. Reactivity with Water A. Lithium, Sodium and Potassium Describe the reaction of each metal with water. Include specific identification of the products formed. Na and H6₂0 Q-1 Q-2 feezing k and H₂0 feezing Li aindl H₂0 feezing Write the balanced chemical equation for each reaction: Q-3 and Q-4 turn smoke andl Pink ignition turn Pink Clear Rank:
ffice Editing for Docs, Sheets & Slides| chrome-extension://bpmcpldpd majfigpchkicefoigmkfalc/views/app.html 2022 (1).doc mat Tools Help 9. Normal Unsaved chang Edits will not be automatically saved. Times New ... 12 T BIU A A- How many neutrons does the Cl atom have? a) 19 b) 18 Ans c) 9 d) 17 . 10. What is the difference between Atomic Mass and Atomic Number? Save now a) Atomic Mass is the number of protons; Atomic Number is the number of neutrons b) Atomic Mass is the number of protons and neutrons; Atomic Number is the number of protons c) Atomic Mass is the number of neutrons; Atomic Number is the number of protons d) Atomic Mass is the number of protons; Atomic Number is the number of protons and neutrons. 0 11. What is the electron configuration of the Neon (Ne) atom? 12. What is the chemical formula of the compound formed by Barium ion and sulfate ion? 31 DELL
rome File Edit View History Bookmarks Profiles Tab Window Help G immensely s X x | ALEKS x G period 4 per x A ALEKS-Sab X S Periodic Tab X www-awa.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkr7j8P3jH-IQgHIvdL2donGg9plnQUm9kiGJhghYuAiZL4_LWdlJcpu5NFnVTrtxJQ-dllibzoJekXVdleVI8ECEJ3... KH Chapter Content -... Q Chemistry lab Flas... Chemistry lab Flas... Untitled documen... School planner -... KH Chapter Content -... с bell Biology... dis ne = 0 O ELECTROCHEMISTRY Writing and balancing complex half-reactions in acidic solution 'Low FODMAP ric... Mc Gmail Explanation Check APR 11 O Write a balanced half-reaction for the oxidation of gaseous nitrogen dioxide (NO₂) to nitrate ion (NO₂) in acidic aqueous solution. Be sure to add physical state symbols where appropriate. 48 tv S 0-0 (312) ALEKS X A ALEKS - Sab X e X Ś EX D 67 4. 9 8 Periodic Tab x G nitrogen far x ☆ 1/5 Fri Sabrina V =J 335 000 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility 18 Ar >
Potentially Useful Information Spectrochemical Series: I < Br < SCN° < Cl° < NO3¯ < F < OH° < C2O4²-~ H2O < NCS < NH3 < en < PPH3 A student has three test tubes containing a metal (M) nitrate solution M(NO3)2 (aq) (where "M" represents a generic transition metal). The student adds aqueous ammonia (NH3) to one test tube, aqueous hydrochloric acid (HCI) to the second tube, and nothing more to the third tube, but forgets to label the tubes. After this, one test tube contains a red solution, one an orange solution, and one a yellow solution. Note: This metal, M, would follow the same rules that we used for Cu(II), Ni(II), and Co(II). The Jahn-Teller Effect does not apply. Complete each statement or answer each question below about the solutions in the three test tubes. The coordination complex causing the orange solution causes a larger splitting between the d orbitals of the metal then the coordination complex causing the... O red solution. O yellow solution. What color light does the…
The technique of mass spectrometry cannot... be used in conjunction with an HPLC. be used in the analysis of very large molecules like proteins. differentiate enantiomers differentiate the different isotopes of the elements in a sample. O be used for elemental analysis of a sample.
Be sure to answer all parts. Identify the highlighted element in the periodic table and give its: [1] element name and symbol; [2] group number; [3] period; [4] classification (i.e., main group element, transition metal, or inner transition metal). Element name, (symbol) Group number (select) Period Classification (select) 47 raw pe here to search < Prev. 12
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r Mt. Zion A-B11-1 X K Jennessy Greenough - Atoms, M X O Meet - zgt-jahh-bnt New Tab A web.kamihq.com/web/viewer.html?state%=%7B'ids"%3A%5B"1YoSVtEOUG4Q5sa4dQDaBQRxVYgR7TCVT"%5D%2C"authuser"%3A"0"%2C"1 ent Edu O P A Mt. Zion A-B Jennessy Greenough - Atoms, Molecules, Matter Review and Counting Atoms.p + 100% elements that are chemically bound together. Part Two - Visual Summary Identify whether the following is an atom or molecule and an element or compound. Explain your answer. Diagram Atom or Molecule Element or Compound Explain One particle of on ly one type atom Element Now draw your own! Atom Element Molecule Compound DI
rome File Edit View History Bookmarks People Tab Window Help * A 19%O HCc Dashboar x E Buy Essay x G find some x © Periodic T X A ALEKS - J x Hcc Chapter 5 x G convert cX A www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IQİHQRDYV_6Ux63SypJXz0Coxvwqgg4JkWI77rzDGvdXC.. O GASES Jacqueline Using the ideal equation of state S Search jacqueh mail.goo Boron trifluoride gas is collected at -19.0 °C in an evacuated flask with a measured volume of 25.0 L. When all the gas has Profile - been collected, the pressure in the flask is measured to be 0.090 atm . R web.robl Cuteding of the mi Calculate the mass and number of moles of boron trifluoride gas that were collected. Round your answer to 2 significant digits. 副 Virtual E - Roblox web.robl Virtual B group on R mass: g mole: mol Ar Manage M appleid. Your App account nu Explanation Check n2021 McGraw.Hill Education All Rinhts Reserved. Terms of Use Privacy II
me File Edit View History Bookmarks People Tab Window Help * * 5% I Mcc Dashboar x E Buy Essay x G find some x © Periodic T x A ALEKS - J X Mcc Chapter 5 x G convert CX A www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkr7j8P3jH-IQİHqRdYV_6Ux63SypJXz0Coxvwqgg4JkWI74Meq7fCi1Pj. ☆ O GASES Jacqueline Solving for a gaseous reactant S Search r jacqueh mail.goo Combustion of hydrocarbons such as pentane (C,H,2) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosphere can trap the Sun's heat, raising the average temperature of the Earth. For this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide. Profile R web.robl Cuteding of the mi Virtual E R 1. Write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. - Roblox web.robl Virtual B group on olo Manage side M appleid. Your App 2. Suppose 0.200 kg…
Potentially Useful Information Spectrochemical Series: | < Br < SCN¯ < Cl° < NO3¯ < F° < OH° < C2O4²¯ ~ H2O < NCS° < NH3 < en < PPH3 く A student has three test tubes containing a metal (M) nitrate solution M(NO3)2 (aq) (where "M" represents a generic transition metal). The student adds aqueous ammonia (NH3) to one test tube, aqueous hydrochloric acid (HCI) to the second tube, and nothing more to the third tube, but forgets to label the tubes. After this, one test tube contains a red solution, one an orange solution, and one a yellow solution. Note: This metal, M, would follow the same rules that we used for Cu(II), Ni(II), and Co(II). The Jahn-Teller Effect does not apply. Complete each statement or answer each question below about the solutions in the three test tubes. The aqua complex causes less splitting of the d orbitals of the metal than the... ammonia complex. O chloro complex.
Barium    +    water   =   ANSWER IN WORDS ONLY!!!
Given = 3.0 M Ca(oH)2 & 2.5L Looking For = g Ca (OH)2 (3.0M)X2.5 L) mol= 7.5 mol CaloH )2 M= mol mol = M × L = Calx40.08 = 40.08 | x 16.0 0 = 1le.00 I x 1.01 1. %3D 57.09 g/mol CacoH)2 7.5 mol CaloH)z 57.09 gCa(ott)428.189 I mol Ca(oH)2 CaloH2 The student got the answer wrong. Identify the error, explain the mistake in detail and fix it by providing the correct answer.
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