Chemistry (4th Edition)

Published by McGraw-Hill Publishing Company
ISBN 10: 0078021529
ISBN 13: 978-0-07802-152-7

Chapter 3 - Questions and Problems - Page 120: 3.35


There are $9.97 \times 10^{-15}$ moles of $Co$ in 6 billion atoms of $Co$.

Work Step by Step

Using Avogadro's number, we find: $6.00 \times 10^9 atoms \times \frac{1 mole}{6.022 \times 10^{23} atoms} = 9.97 \times 10^{-15}$ moles.
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