Answer:
Molecular mass of urea (NH 2CONH 2) × 2
× (Atomic mass of N ) + 4
× (Atomic mass of H) + (Atomic mass of C) + (Atomic mass of O) = 60
Mass percentage of N =
Total mass of N atoms in the compound / Mass of compound × 100 = 28 / 60 × 100 = 46.67
Explanation:
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