Answer
$1.06\times10^{-18}$ grams
Work Step by Step
$1$molecule$=5.3\times10^{-23}$
$20,000$molecule$=20,000\times5.3\times10^{-23}=106,000\times10^{-23}=1.06\times10^{-18}$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.2 - Exponents and Scientific Notation - Exercise Set - Page 31: 119
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