Answer
It tells us that the masses of atoms and molecules are not always the same.
Work Step by Step
It tells us that the masses of atoms and molecules are not always the same.
Chemistry (12th Edition)
by Wilbraham
Published by
Prentice Hall
ISBN 10:
0132525763
ISBN 13:
978-0-13252-576-3
Chapter 10 - Chemical Quantities - 10.1 The Mole: A Measurement of Matter - Chemistry & You: Everyday Matter - Take It Further - Page 316: 3
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