Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 6 - Sections 6.1-6.10 - Exercises - Problems by Topic: 39b

Answer

The energy exchange is work because its the result of force acting through a distance.

Work Step by Step

The sign $\Delta$$E$ is negative because work is being done on the surroundings.
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