General, Organic, & Biological Chemistry 3rd Edition

Published by McGraw-Hill Education
ISBN 10: 0-07351-124-2
ISBN 13: 978-0-07351-124-5

Chapter 1 - Matter and Measurement - Problems - Page 30: 1.45

Answer

Exact numbers are those derived from counting or that come from definitions. An example is that there are 13 pieces of bread in a baker's dozen.

Work Step by Step

Inexact numbers are those that come from measurements. No matter the precision of the instrument, measurements inherently come with a level of error.
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