Answer
There are $0.081$ moles of Epsom salt in 20g of that.
Work Step by Step
As we calculated in the last exercise, the molar mass for Epsom salt is equal to 246.52g/mol.
$20g \times \frac{1 mol}{246.52g} = 0.081 moles$
Chemistry: The Molecular Science (5th Edition)
by Moore, John W.; Stanitski, Conrad L.
Published by
Cengage Learning
ISBN 10:
1285199049
ISBN 13:
978-1-28519-904-7
Chapter 2 - Chemical Compounds - Exercise 2.19 - Amount of an Ionic Hydrate - Page 8: b
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