Molar Mass of C4H6O2 (Methacrylic Acid)

Molar Mass Calculator

What is the molar mass of C₄H₆O₂?

Answer

M(C₄H₆O₂) =

86.090 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	4	12.011	48.044 w ≈ 55.81%	≈ 55.81%
Hhydrogen	6	1.0080	6.0480 w ≈ 7.03%	≈ 7.03%
Ooxygen	2	15.999	31.998 w ≈ 37.17%	≈ 37.17%
Σ = 86.090 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

C 55.81%O 37.17%

H 7.03%

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Molar masses of substances nearby

Formula	M, g/mol
NaNO₃ (sodium nitrate)	84.994
KNO₂ (potassium nitrite)	85.103
Rb (rubidium)	85.468
C₄H₆O₂ (methacrylic acid)	86.090
C₆H₁₄ (hexane)	86.178
LiBr (lithium bromide)	86.84
MnO₂	86.936

FAQ

What is the molar mass of C4H6O2?

M(C₄H₆O₂) = 86.090 g/mol

How to calculate the molar mass of C₄H₆O₂?

Add up the atomic weights of all the atoms in the formula: 4 × 12.011 + 6 × 1.0080 + 2 × 15.999 = 86.090 g/mol.

How many grams are in 2 moles of C₄H₆O₂?

m = n × M = 2 mol × 86.090 g/mol = 172.180 g.

See Also