Answer
The sign of w is positive.
Work Step by Step
$w=-(P\Delta V)$. $\Delta V$ is negative therefore the sign of w is positive.
Chemistry: The Central Science (13th Edition)
by Brown, Theodore E.; LeMay, H. Eugene; Bursten, Bruce E.; Murphy, Catherine; Woodward, Patrick; Stoltzfus, Matthew E.
Published by
Prentice Hall
ISBN 10:
0321910419
ISBN 13:
978-0-32191-041-7
Chapter 5 - Thermochemistry - Exercises - Page 203: 5.9a
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