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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro
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Calculate the number of atoms in each sample. a. 5.18 g P b. 2.26 g Hg c. 1.87 g Bi d

Chapter 2, Problem 87

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QUESTION:

Calculate the number of atoms in each sample. a. 5.18 g P b. 2.26 g Hg c. 1.87 g Bi d. 0.082 g Sr

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QUESTION:

Calculate the number of atoms in each sample. a. 5.18 g P b. 2.26 g Hg c. 1.87 g Bi d. 0.082 g Sr

ANSWER:

Problem 87Calculate the number of atoms in each sample. a. 5.18 g Pb. 2.26 g Hg c. 1.87 g Bi d.0.082 g Sr. Step by step solutionStep 1 of 5The number of atoms or molecules present in a given amount of substance can be determined ifthe number of moles of the substance is known. The number of moles is equal to the mass of thesubstance present per molar mass of the substance and is expressed as follows:Here, m is the given mass and M is the molecular mass of the substance.The number of atoms (N) in n moles of a substance is calculated by multiplying the moles withAvogadro's number. The expression is as follows:

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