Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Let's Review: The Tools of Quantitative Chemistry - Study Questions: 26


a) $2.44\times10^8$ b) $4.85\times10^{-1}$ c) $1.33\times 10^{-1}$ d) $2.86\times10^{-1}$

Work Step by Step

a) Retain 3 significant figures: $2.44\times10^8$ b) Retain 3 significant figures: $4.85\times10^{-1}$ c) Retains 3 significant figures: $1.33\times 10^{-1}$ d) $(23.56-2.3)$ must retain 1 digit after the decimal, because that's the same as the one with the fewest (2.3): $21.26\rightarrow 21.3$ Along with 1.68, this number has the fewest significant figures (3), and since all the other operators are either multiplication or division, that's the number of significant figures of the answer: $2.86\times10^{-1}$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.