Answer
-41 J.
Work Step by Step
Given, $\Delta U$= -128 J.
q = -87 J ( negative because heat is released)
We know, $\Delta U$ = q+w.
-128 J = -87 J + w.
Which gives w = -128 J+ 87 J = -41 J.
Chemistry (4th Edition)
by Burdge, Julia
Published by
McGraw-Hill Publishing Company
ISBN 10:
0078021529
ISBN 13:
978-0-07802-152-7
Chapter 5 - Questions and Problems - Page 221: 5.14
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