Question

calculate the percentage of nitrogen in ammonium nitrate

Answer 1

Percentage of nitrogen in ammonium nitrate can be determined as follow:

Molecular mass of ammonium nitrate(NH4NO3) = 14g + 4×1g + 14g + 3×16g = 80g

So in 80 g of NH4NO3, mass of nitrogen is= 14 +14 = 28g

So in 1 g of NH4NO3, mass of nitrogen is =28/80

In 100 g of NH4NO3, mass of nitrogen is =28×100/80 = 35%

So percentage of nitrogen in ammonium nitrate is 35%.

Answer 2

relative molecular mass of NH4NO3 = 80

percentage of nitrogen = 28/80 x 100

= 35%