Molar Mass of CuFeS2

Molar Mass Calculator

What is the molar mass of CuFeS₂?

Answer

M(CuFeS₂) ≈

183.51 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — S: 32.06.

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 ≈ 34.63%	≈ 34.63%
Feiron	1	55.845	55.845 w ≈ 30.43%	≈ 30.43%
Ssulfur	2	32.06	64.12 w ≈ 34.94%	≈ 34.94%
Σ = 183.511 ≈ 183.51 g/mol w = 100%				100%

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

Mass fractions of the elements

S 34.94%Cu 34.63%Fe 30.43%

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Molar masses of substances nearby

Formula	M, g/mol
C₇H₅NO₃S (saccharin)	183.18
C₉H₁₃NO₃ (epinephrine)	183.207
(CH₃COO)₂Zn (zinc acetate)	183.47
CuFeS₂	183.51
SrSO₄ (strontium sulfate)	183.68
W (tungsten)	183.84
MgBr₂ (magnesium bromide)	184.113

FAQ

What is the molar mass of CuFeS2?

M(CuFeS₂) ≈ 183.51 g/mol

How to calculate the molar mass of CuFeS₂?

Add up the atomic weights of all the atoms in the formula: 63.546 + 55.845 + 2 × 32.06 = 183.511 ≈ 183.51 g/mol.

How many grams are in 2 moles of CuFeS₂?

m = n × M = 2 mol × 183.51 g/mol = 367.02 g.

See Also