Chemistry: A Molecular Approach (3rd Edition)

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: 78b

Answer

There are three significant figures in 312,000.

Work Step by Step

All non-zero numbers are significant (in this case the 3, the 1, and the 2). The three zeroes are insignificant because you could just as easily write 312,000 as $3.12 \times 10^{5}$.
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