Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 2 - Chemical Compounds - Questions for Review and Thought - Topical Questions: 78c

Answer

$$5.59 *10^{20} molecules $$

Work Step by Step

From the previous problem, we found that there were 92.9 mmol copper in a penny. Using Avogadro's number, we find: $$\frac{92.9 mmol}{1} \frac{6.022*10^{23} molecules}{mol} = 5.59 *10^{20} molecules $$
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