Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 3 - Chemical Reactions and Reaction Stoichiometry - Exercises: 3.33


The mass of an Avagadro's number of people, if the average mass of a person is 160lb is: $9.63 X 10^25$ pounds or $4.369 X 10^25$ kilograms The mass of the earth is 1.611E25 Kg heavier than 1 mol of people

Work Step by Step

Key things to know: Avogadro's number $6.02 X 10^{23}$ 1 pound = 0.4536 kilograms How To solve: 6.02E23 people X 160lbs =$9.63 X 10^{25}$ pounds $9.63 X 10^{25}$ pounds X (.4536kg/1 Lb) =$4.369 X 10^{25}$ kilograms note, pounds cancel out and you're left with kilograms 5.98E25 - 4.369E25 kilograms = 1.611E25 Kg
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