Chemistry

Question Analysis
This question involves calculating the percent composition of nitrogen in ammonia.
The main focus is on accounting for multiple hydrogen atoms when calculating the compound’s molar mass.

Key Concept Explanation
Percent composition of an element = (mass of the element in 1 mole of compound / molar mass of compound) × 100%

Step-by-Step Solution
1. Mass of N in NH₃ = 14 g/mol
2. Molar mass of NH₃ = 14 + (3 × 1) = 17 g/mol
3. % N = (14 / 17) × 100% ≈ 82.35%

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