Molar Mass of C8H8 (Styrene)

Molar Mass Calculator

What is the molar mass of C₈H₈?

Answer

M(C₈H₈) =

104.152 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	8	12.011	96.088 w ≈ 92.26%	≈ 92.26%
Hhydrogen	8	1.0080	8.0640 w ≈ 7.74%	≈ 7.74%
Σ = 104.152 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
SrO (strontium oxide)	103.62
NaHSO₃ (sodium hydrogen sulfite)	104.06
C₃H₄O₄ (malonic acid)	104.061
C₈H₈ (styrene)	104.152
BeSO₄ (beryllium sulfate)	105.07
Na₂CO₃ (sodium carbonate)	105.988
C₇H₆O (benzaldehyde)	106.124

FAQ

What is the molar mass of C8H8?

M(C₈H₈) = 104.152 g/mol

How to calculate the molar mass of C₈H₈?

Add up the atomic weights of all the atoms in the formula: 8 × 12.011 + 8 × 1.0080 = 104.152 g/mol.

How many grams are in 2 moles of C₈H₈?

m = n × M = 2 mol × 104.152 g/mol = 208.304 g.

See Also