Molar Mass of C3H6 (Propylene)

Molar Mass Calculator

What is the molar mass of C₃H₆?

Answer

M(C₃H₆) =

42.081 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	3	12.011	36.033 w ≈ 85.63%	≈ 85.63%
Hhydrogen	6	1.0080	6.0480 w ≈ 14.37%	≈ 14.37%
Σ = 42.081 g/mol w = 100%				100%

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

Mass fractions of the elements

C 85.63%

H 14.37%

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Molar masses of substances nearby

Formula	M, g/mol
MgO (magnesium oxide)	40.304
C₂H₃N (acetonitrile)	41.053
NaF (sodium fluoride)	41.988
C₃H₆ (propylene)	42.081
LiCl (lithium chloride)	42.39
HN₃ (hydrogen azide)	43.029
CO₂ (carbon dioxide)	44.009

FAQ

What is the molar mass of C3H6?

M(C₃H₆) = 42.081 g/mol

How to calculate the molar mass of C₃H₆?

Add up the atomic weights of all the atoms in the formula: 3 × 12.011 + 6 × 1.0080 = 42.081 g/mol.

How many grams are in 2 moles of C₃H₆?

m = n × M = 2 mol × 42.081 g/mol = 84.162 g.

See Also