Molar Mass of C6H6 (Benzene)

Molar Mass Calculator

What is the molar mass of C₆H₆?

Answer

M(C₆H₆) =

78.114 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
Ccarbon	6	12.011	72.066 w ≈ 92.26%	≈ 92.26%
Hhydrogen	6	1.0080	6.0480 w ≈ 7.74%	≈ 7.74%
Σ = 78.114 g/mol w = 100%				100%

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

Mass fractions of the elements

C 92.26%

H 7.74%

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Molar masses of substances nearby

Formula	M, g/mol
Na₂S (sodium sulfide)	78.04
CaF₂ (calcium fluoride)	78.074
H₂SiO₃ (metasilicic acid)	78.098
C₆H₆ (benzene)	78.114
Se (selenium)	78.971
NH₄HCO₃ (ammonium hydrogen carbonate)	79.055
C₅H₅N (pyridine)	79.102

FAQ

What is the molar mass of C6H6?

M(C₆H₆) = 78.114 g/mol

How to calculate the molar mass of C₆H₆?

Add up the atomic weights of all the atoms in the formula: 6 × 12.011 + 6 × 1.0080 = 78.114 g/mol.

How many grams are in 2 moles of C₆H₆?

m = n × M = 2 mol × 78.114 g/mol = 156.228 g.

See Also