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 - Review Questions - Page 287: 10


If energy flows out of a chemical system and into the surroundings, the sign of $ΔE_{System}$ is negative.

Work Step by Step

$ΔE_{System}$ = $ΔE_{Final}$ - $ΔE_{Initial}$ = $-$$ΔE_{System}$ If a system loses energy to its surroundings, then $ΔE_{Final}$ $\lt$ $ΔE_{Initial}$ and the end change will be negative.
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