Molar and molecular weight of (NH4)3PO4

• Molecular formula: (NH4)3PO4 or H12N3O4P
• Relative molecular weight of (NH4)3PO4: 149.086742
• Molar mass of (NH4)3PO4: 149.086742 g/mol (0.14909 kg/mol)

Calculation of the relative molecular and molar mass of (NH4)3PO4

• Mr[(NH4)3PO4] = Ar[H] * 12 + Ar[N] * 3 + Ar[O] * 4 + Ar[P] = 1.00794 * 12 + 14.0067 * 3 + 15.9994 * 4 + 30.973762 = 149.086742
• Molar mass (kg/mol) = Mr[(NH4)3PO4] : 1000 = 149.086742 : 1000 = 0.14909 kg/mol

(NH4)3PO4: percent composition by element

• Hydrogen (H) = 12.09528 : 149.086742 * 100 = 8.113 %
• Nitrogen (N) = 42.0201 : 149.086742 * 100 = 28.185 %
• Oxygen (O) = 63.9976 : 149.086742 * 100 = 42.926 %
• Phosphorus (P) = 30.973762 : 149.086742 * 100 = 20.776 %

Molar mass calculator