12. What is the charge of an atom with 10 electrons,12 protons,and 12 neutrons? A. 2 B.10 C.12 D.22

Q: Sulphur has three common isotopes, with the masses and isotopic abundances shown below: Sulphur-32…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

Q: Suppose that atomic masses were based on the assignment of a mass of 12.000 g to 1 mol of carbon,…

A: An element is positioned on the basis of atomic number. Each atom will have a fixed and different…

Q: Help me with understanding how to calulate mass for A1 and A2

A: Molarity = mole of solute(mol)volume of solution (L)Mass of compound = moles × molar mass1mL =…

Q: Bromine also occurs in nature as two isotopes. What is the specific mass of each isotope? What is…

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Q: Reference section 3.2 to find the atomic masses of 12C and 13C, the relative abundance of 12C and…

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Q: 1)the chemical symbol found on the periodic table is ?  2) the number of protons for the product is…

A: 1.Now we know that the number must be same on both the product as well as the reactant Side and we…

Q: I am working on question 25 of chapter 2 in the chemistry openstax second edition.  The question is…

A: The equation is correct. In the equation x is the fraction of isotope with atomic mass 10.0129 amu…

Q: 15. A chemist has 2.50 grams of magnesium. How many particles of magnesium does the chemist have?…

A: let us try to understand the mole concept.

Q: . Suppose you have a sample of sodium weighing 14.50 g. What mass of potassium would you need to…

A: Atomic mass of sodium=23 Atomic mass of potassium=39 Number of mole=given mass/molar mass So,…

Q: Gaseous butane will react with gaseous oxygen (02) to pr 1.16 g of butane is mixed with 6.9 g of…

A: Given the chemical reaction between butane gas and oxygen gas. The products of the reaction are:…

Q: an abundance of 2.365%. What is the abundance of the first isotoper a. 4.479% b. 6.957% d. 80.913%…

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Q: A cube of solid aluminum has a volume of 8.87×103 cm3 and a density of 2.6989g/cm3. However, the…

A: Initial volume V1 = 8.87 x 103 cm3.Density, d = 2.6989 g/cm3.Initial mass, m1 = V1 x d = (8.87 x 103…

Q: Mass Isotope from the list, and answer the following questions for each term: What familiarity and…

A: The two given terms are  Mass Isotope Dear student since it is a multiple subparts questions,…

Q: Compound 1 has a composition of 23 mass % of element A and 77 mass % of element B. A and B also form…

A: Law of multiple proportion:  As per the law of multiple proportion, if 2 elements form more than one…

Q: 21. Using Example 2.11 page 64 of your textbook to obtain the mass % of chlorine (Cl) in CH2Cl2 and…

A: Molar Mass of CH2Cl2 = 84.93 g/mol Molar Mass of CHCl3 = 119.38 g/mol We have to find out the…

Q: Page |99 SUBATOMIC PARTICLES AND ISOTOPES Complete Symbol Atomic Mass Number of Number of Number of…

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Q: 15 Which best describes the atom: 26Fe A. 56 protons, 26 neutrons B. 26 protons, 30 neutrons C. 26…

A: Since you have asked a question with multiple sub-parts, as per our company guidelines we are…

Q: How would you determine the accuracy of an atomic mass?

A: The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of…

Q: mass Al = 27.0g A1 find the mass of AI mole AI जनद y=.073750. f

A: Given, y ( 27.0 g Al / mole Al )  y = 0.02375        Required,                          Mass of Al…

Q: Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

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Q: a. How many hydrogen atoms are in the picture? Nitrogen? b. Does the formula indicate how many atoms…

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Q: A 11.65 g sample of NaBr contains 22.34% Na by mass. Considering the law of constant composition…

A: Law of constant composition:It is also known as law of definite proportions.  It states that a…

Q: hydrogen helum H Не 1.0079 hium 4.0026 noon berylikun boron carbon ritrogen oygen fluorine 10 Li Be…

A: The correct option is:

Q: Calculate the number of atoms there are in a sample of aluminum that with a mass of 81g

A: Given that:  Mass of Aluminium(Al) = 81g  Molar mass of Aluminium = 27g/mol So, moles of Al =…

Q: Incomplete Chlorine has two naturally stable isotopes: 35 CI (34.968853 amu) and 37 CI (36.965903…

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Q: Natural rubidium has the average mass of 85.4678 u and is composed of isotopes85Rb (mass = 84.9117…

A: Mass of the Rb = 86.913 amu. Given data: 85.4678 amu is average mass of the Rb Mass of 85Rb =…

Q: What is the mass of magnesium fluoride that contains 7.29 × 1024 F atoms?   Relative atomic…

A: Given,  The mass of magnesium fluoride that contains 7.29 × 1024 F atoms is:

Q: On the fictional planet Zeus, boron occurs as 55.46% of 10B (atomic mass = 10.01 u) and 44.54% of…

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Q: A 25.0 g sample of sucrose is found to contain 51.4% by mass oxygen. A second sample of sucrose…

A: The above statement is consistent with law of Constant Composition.

Q: 13) A 44.8 g rhodium sample contains how many rhodium atoms? B) 2.74 x 105 atoms A) 2.62 x 1023…

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Q: What is the average mass of the atoms ? (Copper-63 has a mass of 62.92960 amuamu, and copper-65 has…

A: The average atomic mass of the element is defined as the sum of the mass of all the isotopes present…

Q: Naturally occurring magnesium has the following isotopicabundances:

A: The atomic mass of magnesium has to be calculated. Average atomic mass of the element is calculated…

Q: 2.A student says,“A carbon atom is not the smallest possible amount of carbon, because atoms are…

A: Atoms are made up of smaller particles like electrons, protons and neutrons. Similarly, a carbon…

Q: A piece of copper contains 6.7×108 atoms. What is the mass of the sample, in units of kilograms

A: molar mass of Cu = 63.55 g/molThis is mass of 6.022×1023 atomsuse:mass of 1 atom = molar…

Q: A sample of Si weighs 54.8 grams. Will a sample of Ba that contains the same number of atoms weigh…

A: Answer: Since, 1 mole is always equal to 6.022×1023, therefore same number of atoms will always be…

Q: Mass of magneisum before experiment is 0.33g   mass after is 0.49 g   Calculate the number of…

A: Number of moles = Mass in gram/Molar mass in gram/mole Given that: Mass of Magnesium = 0.33 g Mass…

Q: Natural rubidium has the average mass of 85.4678 u and is composed of isotopes85 Rb (mass = 84.9117…

A: Mass of the Rb = 86.913 amu. Given data: 85.4678 amu is average mass of the Rb Mass of 85Rb =…

Q: 1.21 x 1028 atoms of oxygen gas (o,)? 1 mol = 6.02 x %3D F7 FB F9 F10 F11 F12

A: Number of Molecules of O2 gas = ( Number of atoms of O2 gas / 2 )  Number of Molecules of O2 gas = (…

Q: 100% Normal text Oxygen 12 ... 3. The atomic masses of elements are generally not whole numbers.…

A: Concept is based on isotopes:     As per our guideline we have to answer first question only.

Q: The element silver (Ag) has two naturally occurring isotopes:109 Ag and 107Ag with a mass of 106.905…

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Q: Sample of zinc contains 2,5 moles of zinc atoms. The mass of the zinc sample is.. a. 164,575g b.…

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Q: he image shows a representative sample of 5050 atoms of a fictious element, called lemonium (LeLe).…

A: Given: The atomic mass of Le-19 = 19.0134 u The atomic mass of Le-17 = 17.4629 u The atomic mass of…

Q: A copper wire weighs 1.312 g is 2.15 mm in diameter and 40.5 mm long. The atomic mass of copper is…

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Q: Argon has three common isotopes, with the masses and isotopic abundances shown below: Argon-36 --->…

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Q: d. What is the % composition of carbon in Excedrin? e. What is the % composition of hydrogen in…

A: From the formula of excedrin, C25H27N5O8, the number of moles of each of the elements is indicated.,…

Q: Please use the precision of the values in the periodic table link to determine the correct number of…

A: The atomic mass of  He = 4.003 amu The atomic mass of  Fe = 18.998 amu The atomic mass of  Na =…