Chemistry 9th Edition

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

Chapter 6 - Thermochemistry - Exercises: 31

Answer

a) 41kJ b) 35kJ c) 47 kJ d) a

Work Step by Step

a.1) $\Delta$E = q + w (The internal energy is the sum of the heat and the work.) a.2) $\Delta$E = -47kJ + 88kJ = 41kJ (Plug in values for q and w) b.1) $\Delta$E = q + w (The internal energy is the sum of the heat and the work.) b.2) $\Delta$E = 82kJ + -47kJ = 35kJ (Plug in values for q and w) c.1) $\Delta$E = q + w (The internal energy is the sum of the heat and the work.) c.2) $\Delta$E = 47kJ + 0kJ = 47kJ (Plug in values for q and w) d) The only one with a positive w is letter a.
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