Molar mass of ammonia (NH3)

The molar mass of ammonia (NH3) is 17.031 g/mol.

Step-by-step calculation

ElementAtomsAtomic massSubtotal
Nitrogen × 1 14.007 = 14.007
Hydrogen × 3 1.008 = 3.024
Total17.031 g/mol

Percent composition by element

  • Nitrogen 82.24%
  • Hydrogen 17.76%

Ammonia facts

  • Ammonia is a colorless gas with a sharp, pungent smell, made of one nitrogen atom bonded to three hydrogen atoms.
  • Most ammonia is made by the Haber-Bosch process and used to produce fertilizers, while dilute solutions are sold as household cleaners.
  • It is extremely soluble in water and boils at about -33 °C, which is why it has long been used as a refrigerant in industrial cooling systems.

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FAQ

What is the molar mass of NH3?

The molar mass of ammonia (NH3) is 17.031 g/mol.

How do you calculate the molar mass of NH3?

Multiply the atomic mass of each element by the number of its atoms in NH3, then add the results: 1 × 14.007 (N) + 3 × 1.008 (H) = 17.031 g/mol.

What percentage of NH3 is Nitrogen?

Nitrogen makes up 82.24% of the mass of ammonia (NH3).