Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 2 Atoms, Molecules, and Ions - Study Questions: 73

Answer

a) $1.53\ g$ b) $4.60\ g$ c) $4.59\ g$ d) $1.48\ g$

Work Step by Step

Atomic weights: $O: 15.999u,\ C: 12.011u,\ H:1.008u$ a) $C_3H_7OH$: $M = 3\times12.01 + 8\times1.008+15.999=60.10\ g/mol$ $0.0255\ mol \times 60.10\ g/mol = 1.53\ g$ b) $C_{11}H_{16}O_2$: $M = 11\times12.01 + 16\times1.008+2\times15.999=180.2\ g/mol$ $0.0255\ mol \times 180.2\ g/mol = 4.60\ g$ c) $C_9H_8O_4$: $M = 9\times12.01 + 8\times1.008+4\times15.999=180.2\ g/mol$ $0.0255\ mol \times 180.2\ g/mol = 4.59\ g$ d) $(CH_3)_2CO$: $M = 3\times12.01 + 6\times1.008+15.999=58.08\ g/mol$ $0.0255\ mol \times 58.08\ g/mol = 1.48\ g$
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