Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 1 - Introduction: Matter and Measurement - Exercises: 1.36

Answer

Exact b,e inexact a,c,d,f

Work Step by Step

Exact Numbers have values that are known exactly, and inexact values have uncertainty to them, normally due to measurement. Measurement A is inexact, because it is obtained using a measurement, which will never be exact. Measurement B is exact because it is an integer obtained from a constant group. Measurement C is inexact because the temperature could change depending on location, and measurements are not exact. Measurement D is inexact because it is obtained through a measurement, which is inexact. Measurement E is exact because it is a conversion factor, which is always exact. Measurement F is inexact because averages are obtained through measurements, which are inexact.
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