Molar Mass of NH4NO3 (Ammonium Nitrate)

Molar Mass Calculator

What is the molar mass of NH₄NO₃?

Answer

M(NH₄NO₃) =

80.043 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024).

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Nnitrogen	2	14.007	28.014 w ≈ 35.00%	≈ 35.00%
Hhydrogen	4	1.0080	4.0320 w ≈ 5.04%	≈ 5.04%
Ooxygen	3	15.999	47.997 w ≈ 59.96%	≈ 59.96%
Σ = 80.043 g/mol w = 100%				100%

Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

Mass fractions of the elements

O 59.96%N 35.00%

H 5.04%

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Molar masses of substances nearby

Formula	M, g/mol
CuO (copper(II) oxide)	79.545
TiO₂ (titanium dioxide)	79.865
Br (bromine)	79.904
NH₄NO₃ (ammonium nitrate)	80.043
SO₃ (sulfur trioxide)	80.06
HBr (hydrogen bromide)	80.912
H₂Se (hydrogen selenide)	80.987

FAQ

What is the molar mass of NH4NO3?

M(NH₄NO₃) = 80.043 g/mol

How to calculate the molar mass of NH₄NO₃?

Add up the atomic weights of all the atoms in the formula: 2 × 14.007 + 4 × 1.0080 + 3 × 15.999 = 80.043 g/mol.

How many grams are in 2 moles of NH₄NO₃?

m = n × M = 2 mol × 80.043 g/mol = 160.086 g.

See Also