General Chemistry: Principles and Modern Applications (10th Edition)

Published by Pearson Prentice Hal
ISBN 10: 0132064529
ISBN 13: 978-0-13206-452-1

Chapter 1 - Matter: Its Properties and Measurement - Example 1-6 - Applying Significant Figure Rules: Addition/Subtraction - Page 23: Practice Example A

Answer

26.7

Work Step by Step

The appropriate number of significant figures can be figured out by looking at 0.236, which has the least precision with only 3 significant figures. Hence, the answer must be to three significant figures. 0.236 + 128.55 - 102.1 = 26.7
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