Chemistry: Molecular Approach (4th Edition)

Published by Pearson
ISBN 10: 0134112830
ISBN 13: 978-0-13411-283-1

Chapter 1 - Section 1.6 - The Units of Measurement - Conceptual Connection - Page 14: 1.4


No, the mass of the sealed container and its contents do not change.

Work Step by Step

Since the container is sealed, no water can escape it. Therefore, when it is vaporized, the water remains in the sealed container but in a gas state rather than liquid state. The mass is the same because there is the same amount of water in the beginning to the end.
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