Molar and molecular weight of NH3

• Molecular formula: NH3 or H3N
• Relative molecular weight of NH3: 17.03052
• Molar mass of NH3: 17.03052 g/mol (0.01703 kg/mol)

Calculation of the relative molecular and molar mass of NH3

• Mr[NH3] = Ar[H] * 3 + Ar[N] = 1.00794 * 3 + 14.0067 = 17.03052
• Molar mass (kg/mol) = Mr[NH3] : 1000 = 17.03052 : 1000 = 0.01703 kg/mol

NH3: percent composition by element

• Hydrogen (H) = 3.02382 : 17.03052 * 100 = 17.755 %
• Nitrogen (N) = 14.0067 : 17.03052 * 100 = 82.245 %

Molar mass calculator