Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 1 - Problems - Page 38: 1.69

Answer

See explanation below.

Work Step by Step

a) The speed of light is a measured quantity. Therefore, it is not an exact number. b) The density of mercury is a measured quantity. Therefore, it is not an exact number. c) The number of seconds in an hour is based on the definitions of minutes and hours. Therefore, this is an exact number. d) The number of states is a counted value. Therefore, this is an exact number.
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