A. PROBLEM SOLVING1. Calculate the amount in moles in each of the following quantities. The first one is done for you.1 mol Pb6.022 x 1023 atoms of Pb5.7 x 10 ° atoms of Pb x= 9 x 10 -15 mol Pb%3Da. 5.7 x 10° atoms of Leadb. 3.01 x 1023 atoms of Rubidiumc. 8.08 x 1022 atoms of Kryptond. 2.997 x 1025 atoms of Vanadium2. Calculate the number of atoms in each of the following amounts.2.5 mot Mg x 6.022 x 10 atoms Mg = 2 x 1024 atoms Mg1 mol Mga. 1.004 mol bismuthb. 32.6 mol strontium

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Answered: b. 3.01 x 1023 atoms of Rubidium c.…

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b. 3.01 x 1023 atoms of Rubidium c. 8.08 x 1022 atoms of Krypton d. 2.997 x 1025 atoms of Vanadium

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter4: Molecules, Compounds, And Chemical Reactions

Section: Chapter Questions

Problem 4SC

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Concept explainers

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.

Question

A. PROBLEM SOLVING
1. Calculate the amount in moles in each of the following quantities. The first one is done for you.
1 mol Pb
6.022 x 1023 atoms of Pb
5.7 x 10 ° atoms of Pb x
= 9 x 10 -15 mol Pb
%3D
a. 5.7 x 10° atoms of Lead
b. 3.01 x 1023 atoms of Rubidium
c. 8.08 x 1022 atoms of Krypton
d. 2.997 x 1025 atoms of Vanadium
2. Calculate the number of atoms in each of the following amounts.
2.5 mot Mg x 6.022 x 10 atoms Mg = 2 x 1024 atoms Mg
1 mol Mg
a. 1.004 mol bismuth
b. 32.6 mol strontium

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