Molar Mass of C8H9NO (Acetanilide)

Molar Mass Calculator

What is the molar mass of C₈H₉NO?

Answer

M(C₈H₉NO) =

135.166 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 ≈ 71.09%	≈ 71.09%
Hhydrogen	9	1.0080	9.0720 w ≈ 6.71%	≈ 6.71%
Nnitrogen	1	14.007	14.007 w ≈ 10.36%	≈ 10.36%
Ooxygen	1	15.999	15.999 w ≈ 11.84%	≈ 11.84%
Σ = 135.166 g/mol w = 100%				100%

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

Mass fractions of the elements

C 71.09%

O 11.84%N 10.36%H 6.71%

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Molar masses of substances nearby

Formula	M, g/mol
C₄H₆O₅ (DL-malic acid)	134.087
CuCl₂ (cupric chloride)	134.45
SnO (tin(II) oxide)	134.71
C₈H₉NO (acetanilide)	135.166
CaHPO₄ (dicalcium phosphate)	136.056
KH₂PO₄ (monobasic potassium phosphate)	136.084
CaSO₄ (calcium sulfate)	136.13

FAQ

What is the molar mass of C8H9NO?

M(C₈H₉NO) = 135.166 g/mol

How to calculate the molar mass of C₈H₉NO?

Add up the atomic weights of all the atoms in the formula: 8 × 12.011 + 9 × 1.0080 + 14.007 + 15.999 = 135.166 g/mol.

How many grams are in 2 moles of C₈H₉NO?

m = n × M = 2 mol × 135.166 g/mol = 270.332 g.

See Also