Urea, NH2CONH2; ammonium sulfate, (NH4)2SO4; and ammonium hydrogen sulfate, NH4HSO4, are all common fertilizers. Rank the compounds in order from largest mass percent of nitrogen to smallest mass percent of nitrogen.

The compounds in order from largest mass percent of nitrogen to smallest mass percent of nitrogen:

Urea > Ammonium sulfate > ammonium hydrogen sulfate

Explanation:

Percentage of mass of an element in a compound :

Where:

n = Number of atoms X

A = Atomic mass of atom X

M = Molar mass of compound

Percentage of nitrogen in urea;

Molar mass of urea,M = 60 g/mol

Atomic mass of nitrogen, A = 14 g/mol

n = 2

Percentage of nitrogen in ammonium sulfate ;

Molar mass of urea,ammonium sulfate = 132 g/mol

Atomic mass of nitrogen, A = 14 g/mol

n = 2

Percentage of nitrogen in ammonium hydrogen sulfate;

Molar mass of ammonium hydrogen sulfate ,M = 115 g/mol

Atomic mass of nitrogen, A = 14 g/mol

n = 2

The compounds in order from largest mass percent of nitrogen to smallest mass percent of nitrogen:

46.67% > 21.21%>12.17%

Urea > Ammonium sulfate > ammonium hydrogen sulfate