General, Organic, and Biological Chemistry: Structures of Life (5th Edition)

Published by Pearson
ISBN 10: 0321967461
ISBN 13: 978-0-32196-746-6

Chapter 7 - Chemical Reactions and Quantities - 7.4 The Mole - Questions and Problems - Page 254: 7.29


a. $3.01 \times 10^{23} \space C \space atoms$ b. $7.71 \times 10^{23} \space C \space atoms$ c. $ 0.0867 \space mole \space of \space Fe$ d. $14.1 \space moles \space of \space C_2H_6O$

Work Step by Step

1. Conversion factors: $$1 \space mole \space of \space X = 6.02 \times 10^{23} \space of \space X$$ a. $$0.500 \space mole\space of \space C \times \frac{6.02 \times 10^{23} \space C \space atoms}{1 \space mole \space of \space C} = 3.01 \times 10^{23} \space C \space atoms$$ b. $$1.28 \space mole\space of \space SO_2 \times \frac{6.02 \times 10^{23} \space SO_2 \space molecules}{1 \space mole \space of \space SO_2} = 7.71 \times 10^{23} \space C \space molecules$$ c. $$5.22 \times 10^{22} \space atoms \space of \space Fe \times \frac{1 \space mole \space of \space Fe}{6.02 \times 10^{23} \space Fe \space atoms} = 0.0867 \space mole \space of \space Fe$$ d. $$8.50 \times 10^{24} \space molecules \space of \space C_2H_6O \times \frac{1 \space mole \space of \space C_2H_6O}{6.02 \times 10^{23} \space C_2H_6O \space molecules} = 14.1 \space moles \space of \space C_2H_6O$$
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