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: 1.55


a) 231.6 b) 0.0085 c) 140,000

Work Step by Step

a) 5 rounds the previous 5 up to a 6. b) zeroes before significant numbers in a number less than zero are insignificant 5 rounds the previous 4 up to a 5. c) zeroes are insignificant; 4 does not round up, so the previous 4 remains
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