Chemistry 9th Edition

Published by Cengage Learning
ISBN 10: 1133611095
ISBN 13: 978-1-13361-109-7

Chapter 3 - Stoichiometry - Exercises: 61

Answer

a. $3.54*10^{22}\text{ molecules N}$ b. $3.76*10^{22}\text{ molecules N}$ c. $4.78*10^{21}\text{ molecules N}$

Work Step by Step

a. $1.00\text{ grams}*\frac{1\text{ mol}}{17.03052\text{ grams}}*\frac{1\text{ mol N}}{1\text{ mol}}*\frac{6.0221*10^{23}\text{ molecules}}{1\text{ mol}}=3.54*10^{22}\text{ molecules N}$ b. $1.00\text{ grams}*\frac{1\text{ mol}}{32.04516\text{ grams}}*\frac{2\text{ mol N}}{1\text{ mol}}*\frac{6.0221*10^{23}\text{ molecules}}{1\text{ mol}}=3.76*10^{22}\text{ molecules N}$ c. $1.00\text{ grams}*\frac{1\text{ mol}}{252.0649\text{ grams}}*\frac{2\text{ mol N}}{1\text{ mol}}*\frac{6.0221*10^{23}\text{ molecules}}{1\text{ mol}}=4.78*10^{21}\text{ molecules N}$
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