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marissa [1.9K]
3 years ago
14

Percent Composition Calculations

Chemistry
1 answer:
AysviL [449]3 years ago
5 0

Answer:

\boxed{\text{17.76 \% by mass}}

Explanation:

\text{The mass of one molecule of NH$_{3}$ is:}\\\text{14.01 u N + 3.024 u H = 17.034 u}\\\\\text{mass $\%$ H} =\dfrac{3.024}{17.034} \times 100 \%} =\textbf{17.76 \%}\\\\\text{Ammonia contains }\boxed{\textbf{17.76 \% H by mass}}

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