## Chemistry (4th Edition)

Published by McGraw-Hill Publishing Company

# Chapter 5 - Section 5.2 - Introduction to Thermodynamics - Checkpoint - Page 195: 5.2.1

e) -43 J.

#### Work Step by Step

The system releases heat, So q is negative. Given w=0. $\Delta U$= q+w = -43 J + 0 = -43 J.

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