Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 2 - Sections 2.1-2.9 - Exercises - Problems by Topic: 87d

Answer

$5.6\times10^{20}\ atoms\ Sr $

Work Step by Step

1.Use the molar mass of strontium and Avogadro's number as conversion factors in order to determine the number of atoms of strontium. 2. $0.082 g\ Sr \times\frac{1\ mol\ Sr}{87.62\ g\ Sr}\times\frac{6.022\times10^{23}}{1\ mol\ Sr}= 5.6\times10^{20}\ atoms\ Sr $
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