Molar Mass of C3H8O3 (Glycerol)

Molar Mass Calculator

What is the molar mass of C₃H₈O₃?

Answer

M(C₃H₈O₃) =

92.094 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 ≈ 39.13%	≈ 39.13%
Hhydrogen	8	1.0080	8.0640 w ≈ 8.76%	≈ 8.76%
Ooxygen	3	15.999	47.997 w ≈ 52.12%	≈ 52.12%
Σ = 92.094 g/mol w = 100%				100%

Each fraction is rounded on its own, so the printed ones add up to 100.01%; unrounded, they make exactly 100%.

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

Mass fractions of the elements

O 52.12%C 39.13%

H 8.76%

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Molar masses of substances nearby

Formula	M, g/mol
NiS (nickel(II) sulfide)	90.75
Zr (zirconium)	91.222
N₂O₄ (dinitrogen tetroxide)	92.010
C₃H₈O₃ (glycerol)	92.094
C₇H₈ (toluene)	92.141
Ni(OH)₂ (nickel(II) hydroxide)	92.707
Nb (niobium)	92.906

FAQ

What is the molar mass of C3H8O3?

M(C₃H₈O₃) = 92.094 g/mol

How to calculate the molar mass of C₃H₈O₃?

Add up the atomic weights of all the atoms in the formula: 3 × 12.011 + 8 × 1.0080 + 3 × 15.999 = 92.094 g/mol.

How many grams are in 2 moles of C₃H₈O₃?

m = n × M = 2 mol × 92.094 g/mol = 184.188 g.

See Also