Question

Calculate the percentage of nitogen in urea NH₂CONH₂.

Given : R.A.M. of N = 14, C = 12, O = 16, H = 1
______________​

Answer 1

• Relative molecular mass of urea NH₂CONH₂ is :

━━━━━━━━━━━━━━━━━

∴ R.M.M. = 60

• Percentage of Nitrogen = Wt. of nitrogen/Total wt. of urea ༝ 100

➢ 28/60 ༝ 100

➢ 46.666 or 46.67%

☯ Therefore,

• Hence, the nitrogen is 46.67%.

━━━━━━━━━━━━━━━━━