8. Ammonium phosphate, (NH4)3PO4 and ammonium nitrate NH4NO3, are both used in the production of fertilizers

Question

Predict which compound contains the greater percentage of nitrogen. Verify your prediction by calculating the percentage of nitrogen in each compound.

Answer 1

On inspection I would think Ammonium nitrate while it has 1 less N than ammonium phosphate it has 1 less O and no P.

42/149=0.2819 x 100= 28.19%N in ammonium phosphate

28/80=0.3500 x 100= 35%N in ammonium nitrate