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 - Additional Exercises: 1.86g

Answer

This statement is false. Corrected Version: The number 0.033 has the same number of significant figures as 0.0033.

Work Step by Step

When considering significant figures, it is important to realize that non-zero numbers are significant figures. However, zeroes that do not have non-zero digits behind them are not significant figures. This becomes apparent using scientific notation: $.033=3.3*10^(-2)$ $.0033=3.3*10^(-3)$ Converting into scientific notation makes in clear that zeroes located in front of all of the non-zero digits are not significant. Therefore, each number contains two significant figures.
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