Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 5 - Thermochemistry - Exercises - Page 207: 5.56b

Answer

The process is endothermic.

Work Step by Step

The temperature of the water in the coffee-cup calorimeter drops from $22.0^{\circ}C$ to $16.9^{\circ}C$. This means that the process absorbs energy from its surroundings, and is thus endothermic.
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