Mathematics · Percentage
Calculate the approximate percentage of nitrogen by mass in ammonium sulphate, (NH4)2SO4. [Atomic masses: N = 14 u, H = 1 u, S = 32 u, O = 16 u]
- 121.2%✓
- 26.0%
- 336.0%
- 428.0%
Correct answer
21.2%
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