Answer
D
Work Step by Step
We use stoichiometry, making sure that all units cancel out to $\mu g/L$, to find:
$0.02\ \mu g/L \times 1\ g/10^6\mu g=2\times10^{-8}\ \mu g/L$
Chemistry and Chemical Reactivity (9th Edition)
by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.
Published by
Cengage Learning
ISBN 10:
1133949649
ISBN 13:
978-1-13394-964-0
Let's Review: The Tools of Quantitative Chemistry - 1 Units of Measurement - Review & Check for Section 1 - Page 28: 6
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