Answer
-77 kJ
Work Step by Step
As heat is absorbed, $q$ is taken as positive.
As work is done by the system, $w$ is taken as negative.
$\Delta E=q+w= 115\,J+(-77\,kJ)$
$=0.115\,kJ-77\,kJ$
$=-77\,kJ$
Chemistry: Molecular Approach (4th Edition)
by Tro, Nivaldo J.
Published by
Pearson
ISBN 10:
0134112830
ISBN 13:
978-0-13411-283-1
Chapter 6 - Exercises - Page 289: 44
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