Answer
$1.1 \times 10^{21}NH_3molecules$
Work Step by Step
We know that one $NH_3$ molecule has three hydrogen atoms
So $3.3\times 10^{21}H\space atoms\times\frac{1NH_3 molecule}{3H atoms}=1.1 \times 10^{21}NH_3molecules$
General Chemistry 10th Edition
by Ebbing, Darrell; Gammon, Steven D.
Published by
Cengage Learning
ISBN 10:
1-28505-137-8
ISBN 13:
978-1-28505-137-6
Chapter 2 - Atoms, Molecules, and Ions - Questions and Problems - Page 83: 2.67
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