Question

lanthanide series
actinide series
calculate the percentage of nitrogen in the compound $\ce{nh_{3}}$.
enter the correct number in the box. the answer should be rounded to the nearest tenth.
\boxed{} %
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Explanation:

Step1: Find molar masses

Molar mass of N: \(14.01\) g/mol, H: \(1.008\) g/mol.
For \(NH_3\), molar mass = \(14.01 + 3\times1.008 = 17.034\) g/mol.

Step2: Calculate mass of N

Mass of N in \(NH_3\): \(14.01\) g/mol (1 N atom).

Step3: Compute % composition

\% N = \(\frac{\text{Mass of N}}{\text{Molar mass of }NH_3} \times 100 = \frac{14.01}{17.034} \times 100 \approx 82.3\)

Answer:

82.3