Answer
9$0$,2$0$1km; underline all zeroes
Significant zeroes above are bold.
Work Step by Step
Those zeroes are significant because they are interior zeroes that are between nonzero digits.
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: 76d
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