Molar Mass of NH4I (Ammonium Iodide)

Molar Mass Calculator

What is the molar mass of NH₄I?

Answer

M(NH₄I) ≈

144.94 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — I: 126.90.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Nnitrogen	1	14.007	14.007 w ≈ 9.66%	≈ 9.66%
Hhydrogen	4	1.0080	4.0320 w ≈ 2.78%	≈ 2.78%
Iiodine	1	126.90	126.90 w ≈ 87.55%	≈ 87.55%
Σ = 144.939 ≈ 144.94 g/mol w = 100%				100%

Each fraction is rounded on its own, so the printed ones add up to 99.99%; unrounded, they make exactly 100%.

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

Mass fractions of the elements

I 87.55%

N 9.66%H 2.78%

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Molar masses of substances nearby

Formula	M, g/mol
Al₄C₃ (aluminium carbide)	143.961
NaC₆H₅CO₂ (sodium benzoate)	144.105
Nd (neodymium)	144.24
NH₄I (ammonium iodide)	144.94
H₂O₄Se (selenic acid)	144.983
SF₆ (sulfur hexafluoride)	146.05
C₆H₁₀O₄ (adipic acid)	146.142

FAQ

What is the molar mass of NH4I?

M(NH₄I) ≈ 144.94 g/mol

How to calculate the molar mass of NH₄I?

Add up the atomic weights of all the atoms in the formula: 14.007 + 4 × 1.0080 + 126.90 = 144.939 ≈ 144.94 g/mol.

How many grams are in 2 moles of NH₄I?

m = n × M = 2 mol × 144.94 g/mol = 289.88 g.

See Also