Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 1 - Sections 1.1-1.8 - Exercises - Conceptual Problems: 142

Answer

Diagram C.

Work Step by Step

In diagram a) we are shown a mixture of C and $O_{2}$ molecules, while in diagram b) we are shown a mixture of CO and $O_{2}$. Only in diagram c) we are shown $CO_{2}$ molecules. When $CO_{2}$ sublimes, its chemical structure does not change; this is a phase change.
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