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 - Exercises - Significant Figures: 17

Answer

a) Exact number b) Measured quantity subject to uncertainty c) Measured quantity subject to uncertainty d) Measured quantity subject to uncertainty

Work Step by Step

a) The number of sheets of a paper in a ream of paper is a result of counting, so it is an exact number. b) The liter bottle is not precisely filled up to 1.0000 L. So it is a measured quantity subject to uncertainty. c) The distance between earth and the sun is measured by astronomers. So it is a measured quantity subject to uncertainty. d) The distance between the centers of two oxygen atoms in the oxygen molecule can be measured by chemists. So it is a measured quantity subject to uncertainty.
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