Answer
$$0.295 mol Ar$$
Work Step by Step
1. Use the molar mass of this element as a conversion factor in order to convert grams into moles.
2. $11.8 g Ar\times\frac{1 mol Ar}{39.948 g Ar}=0.295 mol Ar$
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
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 - Page 82: 83a
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