Molar Mass of C4H6O3 (Acetic Anhydride)

Molar Mass Calculator

What is the molar mass of C₄H₆O₃?

Answer

M(C₄H₆O₃) =

102.089 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 ≈ 47.06%	≈ 47.06%
Hhydrogen	6	1.0080	6.0480 w ≈ 5.92%	≈ 5.92%
Ooxygen	3	15.999	47.997 w ≈ 47.01%	≈ 47.01%
Σ = 102.089 g/mol w = 100%				100%

Each fraction is rounded on its own, so the printed ones add up to 99.99%; unrounded, they make exactly 100%.

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

Mass fractions of the elements

C 47.06%O 47.01%

H 5.92%

Related Calculations

See Also

Liters to Kilograms - How many kilograms are in a liter of water, honey, gasoline, sand and other substances — by density
Grams to Kg - Convert Grams to Kilograms
Percentage Calculator: Fraction to Percent - What percentage one number is of another? Convert fraction into a percentage
Scientific Calculator with Memory & History - Free Engineering Calculator Online with Memory Function, Operation History, Logarithms & Trigonometry. Similar to ti-83, ti-84, ti-89

Recalculate with different values ↑

Molar masses of substances nearby

Formula	M, g/mol
KNO₃ (potassium nitrate)	101.102
C₆H₁₅N (triethylamine)	101.193
Al₂O₃ (aluminium oxide)	101.961
C₄H₆O₃ (acetic anhydride)	102.089
C₆H₁₃OH	102.177
NaBr (sodium bromide)	102.894
Rh (rhodium)	102.91

FAQ

What is the molar mass of C4H6O3?

M(C₄H₆O₃) = 102.089 g/mol

How to calculate the molar mass of C₄H₆O₃?

Add up the atomic weights of all the atoms in the formula: 4 × 12.011 + 6 × 1.0080 + 3 × 15.999 = 102.089 g/mol.

How many grams are in 2 moles of C₄H₆O₃?

m = n × M = 2 mol × 102.089 g/mol = 204.178 g.

See Also