Answer
The phase change is deposition (gas to solid).
Work Step by Step
The change is exothermic, as heat leaves the substance in this phase change.
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 11 - Liquids and Intermolecular Forces - Exercises - Page 474: 11.39c
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