Answer
$$4$$
Work Step by Step
Rules for significant figures that apply here: All nonzero digits are significant (rule 1). Leading zeroes ( to the left of the first nonzero digit) are not significant (rule 3).
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
Published by
Prentice Hall
ISBN 10:
0321809246
ISBN 13:
978-0-32180-924-7
Chapter 1 - Sections 1.1-1.8 - Exercises - Problems by Topic - Page 40: 78a
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