Molar Mass of CuI (Cuprous Iodide)

Molar Mass Calculator

What is the molar mass of CuI?

Answer

M(CuI) ≈

190.45 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
Cucopper	1	63.546	63.546 w ≈ 33.37%	≈ 33.37%
Iiodine	1	126.90	126.90 w ≈ 66.63%	≈ 66.63%
Σ = 190.446 ≈ 190.45 g/mol w = 100%				100%

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

Mass fractions of the elements

I 66.63%

Cu 33.37%

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Molar masses of substances nearby

Formula	M, g/mol
SnCl₂ (stannous chloride)	189.61
TiCl₄ (titanium tetrachloride)	189.67
Os (osmium)	190.23
CuI (cuprous iodide)	190.45
H₃C₆H₅O₇ (citric acid)	192.123
Ir (iridium)	192.22
K₂CrO₄ (potassium chromate)	194.188

FAQ

What is the molar mass of CuI?

M(CuI) ≈ 190.45 g/mol

How to calculate the molar mass of CuI?

Add up the atomic weights of all the atoms in the formula: 63.546 + 126.90 = 190.446 ≈ 190.45 g/mol.

How many grams are in 2 moles of CuI?

m = n × M = 2 mol × 190.45 g/mol = 380.90 g.

See Also