Practice question

Given: What is the mass percentage of nitrogen in NH₄NO₃? (Atomic masses: N = 14, H = 1, O = 16) Formula: Molar mass = (2 × 14) + (4 × 1) + (3 × 16) = 28 + 4 + 48 = 80 g/mol. Substitution & Calculation: Mass of N = 28 g. % N = (28 / 80) × 100 = 35%. Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.