Question

Percentage of nitrogen in urea?

Answer 1

Urea has the formula NH₂-CO-NH₂ , i.e. CH₄N₂O
Mol wt = 60 g/mol

Atomic mass of N = 14 & no of atoms = 2 i.e. 28 g/mol of urea

Thus the % = 28/60 x 100 = 46.66 %