Question

What is the mass of nitrogen in thousand kg of urea?

Answer 1

Sol.: - Molecular weight of urea [CO(NH2)2] = 12 + 16 + (14 + 2) × 2 = 60.

60 kg of urea contains 28 kg of nitrogen

1000 kg of urea will contain (28/60) × 1000 = 467kg of nitrogen .