9. There are 1.5 x 1023 atoms in 2.5 moles of zinc. TRUE FALSE Chock it skip

Q: Counting Atoms Fill in the table Pb C CI Mass (g) 0.543 1.834 Molar Mass g/mol) 0.685 Moles Total…

A: We can solve these questions by knowing some of the basic mole concepts, like conversion of number…

Q: moles of atoms are in each elemental sample?

A: 1) Using the molar equation- n: number of moles of the elemental sample. m: given mass of the…

Q: 20. How many atoms does each prefix specify? mono-, di-, tri-, tetra-, penta-, hexa-.

A: An atom is the smallest unit in an element that has all the properties of that element. Molecules…

Q: On earth, tin has 10 different stable isotopes. The heaviest, 124Sn makes up 5.80% of naturally…

A: Grams of 124Sn present in 38.3 g sample     = 38.3*(5.80/100)= 2.22 g

Q: what is the empirical formula of a coumpound that is 75.95% C, 6.33% H, and 17.72% N? keep elements…

A: coumpound that is 75.95% C, 6.33% H, and 17.72% N Atomic mass of N = 14 g Atomic mass of C = 12 g…

Q: Complete the table. Element Mass Moles Number of Atoms Na 38.5 mg C 1.12 V 214 Hg 1.44 kg

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: What is the mass of 2 moles of NH3? (Hint: 1 molecule of NH3 has a mass of 17 amu) * O 17 amu O 17 g…

A:

Q: A sample of CH2F2 with a mass of 19 contains atoms of F. O 2.2 x 1023 O 9.5 9 3.3 x 1024 4.4 x 1023…

A: The molar mass of C = 12g/mol The molar mass of H = 1g/mol The molar mass of F = 19g/mol

Q: How many moles are in 38.9 of Al? Atomic Weight of Al= 26.98

A:

Q: 3)A pure copper sphere has a radius of 0.935 in. How many copper atoms does the sphere contain? The…

A:

Q: What is the mass percent of bromine in lithium bromide?? 1.47.6% 2.52.4% 3.92.01% 4.7.99%…

A: Answer: option 3) 92.01 % is the mass percent of bromine in lithium bromide.

Q: Which kind of chemical formula can be obtained from experimental data showing the relative masses of…

A:

Q: 7. How many sodium atoms is equal to five moles of the atoms? а. 5 b. 3.011 x 1024 с. 500 d. 6.022 x…

A: Mole represent  amount of substance present in any matter.

Q: 1. Calculate the mass of carbon in a 1-carat diamond that contains 7.56 × 1022 atoms of carbon.

A:

Q: Does a mole of Ag (107.9 g) contains the same number of atoms as a mole of Na (22.99g).

A: You have given one mole of both Ag and Na.

Q: 5. How many atoms of hydrogen are present in 2.69 moles of water? 6. Calculate the mass of nitrogen…

A:

Q: Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48…

A: Here we have:Volume of common brass = 115.0 cm3Density of common brass = 8.48 g/cm3As we know:

Q: One mole of copper has a mass of 63.5 grams. Approximately how many atoms of copper are present in…

A: Given  Number of mole = 1 mole  Number of atoms of copper = ?

Q: A pure silver sphere has a radius of 0.886 cm. How many silver atoms does it contain? (volume of a…

A: Calculate the volume of the silver sphere,      Volume of silver sphere = 43 π r3= 43 × 227 × (0.886…

Q: Determine the number of moles of hydrogen atoms in each sample. a. 0.0885 mol C,H10 c. 2.4 mol C,H12…

A: a. 0.0885 mol C4H10 1 mol of C4H10 contains 10 mol of H. Thus, 0.0885 mol C4H10 will contain 10 x…

Q: 2. Write the correct chemical formula: a. Magnesium fluoride b. Stannic nitrate c. Magnesium…

A: Following are the chemical formula of given compounds:

Q: The total number of atoms in one mole of caffeine. Remember that the formula of caffeine is:…

A:

Q: Naturally occurring iron contains 5.82% 54Fe, 91.66 % 56Fe, 2.19% 57Fe, and 0.33% 58Fe.  The…

A: Answer:- This question is answered by using the simple concept of calculation of average atomic mass…

Q: How many atoms are present in a Mg sample with a mass of 14.6 grams?

A:

Q: You have 53 carbon atoms. What is the mass? Which units should you use g/mol or amu? a. 686.58 amu…

A: Answer: No option is correct. The correct answer is 636.53 amu We should use amu unit instead of…

Q: Element Atomic Weight (g/mol) Percent Composition Ni 58.6934 36.3% Fe 55.845 17.3% As 74.9216 46.4%…

A: The percentage composition of each element in the compound is given as, Assuming 100 g of the…

Q: [R Calculate the mass of 900. atoms of arsenic (As). Mass g

A: According to the question, we need to calculate the mass of 900 atoms of Arsenic. we know that: 1…

Q: 1. How many ATOMS of carbon are present in 7.87 grams of carbon tetrabromide, CBR4? atoms of carbon

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Which of the following contains the most atoms? 24.305g Mg 39.098g K 9.0122g Be 21.62g B

A: One mole of a substance contains 6.022×1023 atoms and the number of moles of a substance can be…

Q: Determine the number of atoms in a sample of 2.26 g Hg. O 6.78 x 10 21 atoms O7.53 x 10 22 atoms O…

A: Number of moles of a chemical element or a compound is used to measure the amount of element or…

Q: How many fluorine atoms are present in 117.99 g of sulfur hexafluoride? O a. 4.865 1024 fluorine…

A: The molecular formula of sulfur hexafluoride is SF6. The mass of sulfur hexafluoride is = 117.99 g…

Q: A 12.0 gram of sample of Cr2(SO4)3 contains how many sulfur atoms?

A: Given data : Mass of Cr2(SO4)3 = 12.0 g Molar mass of Cr2(SO4)3 = 392.16 g/mol

Q: A brass alloy contains 87.7% copper, Cu, by mass with the remainder of the alloy being zinc, Zn.…

A:

Q: How many atoms are in each elemental sample? 16.1 g Sr 26.4 g Fe 9.81 g Bi

A:

Q: How many daL of bromine atoms are in 90 x 1022bromine atoms?  (The density of bromine is 3.1 g/cm3)…

A: To get the answer of this question first we calculate the mass of Br atoms given in the question…

Q: How many moles of NF3 contain 2.55 x 1024 fluorine atoms?

A: We have to calculate the moles of NF3.

Q: By x-ray diffraction it is possible to determine the geometric pattern in which atoms are arranged…

A: Given that : The edge length of the cube = 0.409 nm The density of silver = 10.5 g/cm3 The molar…

Q: How many ATOMS of phosphorus are present in 8.70 grams of phosphorus triiodide ?  atoms of…

A: Data given: Mass of phosphorus triiodide = 8.70 g Number of molecules of phosphorus triiodide =…

Q: What is the mass of 1.48 Mol of potassium sulfide (K2S)? A. 12.0g B. 0.0134g C. 195g D. 74.5g…

A: Solution The mole conception could be a convenient methodology of expressing the quantity of a…

Q: 2. How many GRAMS of bromine are present in 9.78×1021 molecules of carbon tetrabromide? grams of…

A: Mole is defined as the unit of measurement for the amount of substance in the International System…

Q: A sample of nitrogen has a mass of 30.2 grams. How many N atoms are there in the sample? How many…

A: First find no. of moles of N2 then no. of molecules then no. of N atoms.

Q: H. Ex: Isotopes of Boron: Boron contains 10B (10.0129g/mol) and 11B. 1°B is 19.91% abundant. Based…

A: given, molar mass of 10B = 10.0129 g/mol let the molar mass of 11B = x g/mol abundance of 10B =…

Q: 2. How many MOLES of exygen are present in 2.91 grams of carbon monoxide? moles

A: We have to calculate moles of oxygen present in 2.91 grams of carbon monoxide.  Molar mass of…

Q: toms are there in 400.5 grams of Silicon? A V-M. G a. b. 6.77 X 1027 atoms 8.58 X 1024 atoms С.…

A:

Q: 2. How many moles would there be in 500 atoms of Silver? - 3. What is the mass of exactly 230 Sodium…

A:

Q: 31. How many atoms of hydrogen are in ONE molecule of (NH4)2S04? А. 4 В. С. 6. D. 1 Е. 8

A: The given compound is ammonium sulphate. (NH4)2SO4

Q: There are 1.5 x 1023 atoms in 2.5 moles of zinc. TRUE FALSE Check it skip

A: As we know that, 1 mole of zinc contains 6.022 × 1023 atoms. So, 2.5 moles of zinc contains  = 2.5 ×…

Q: Find the total number of atoms in a sample of cocaine hydrochloride, C17 H22 CINO4, of mass 22.5 mg…

A: Since we know that  1.0 mol of any substance = 6.022 × 1023 atoms  So first we calculate the number…

Q: An experiment requires that enough SiCI2 I2 be used to yield 18.1 g of iodine. How much SiCI2 I2…

A: Mass of iodine produced = 18.1 g   From the reaction we get that , 1 mol SiCl2 produce = 1 mol I2…

Q: Determine the number of atoms of O in 85.0 moles of Cra(PO.) 4.09 x 10 26 atoms 3 4. 6. 8. 9. +/- x…

A: Given: 85.0 moles of Cr3(PO4)2

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.