Molar mass

Molar Mass of Acetone

The molar mass of acetone (CH3COCH3) is 58.08 g/mol.

Acetone at a glance

PropertyValue
Molar mass58.08 g/mol
Molecular weight58.08 u
Chemical formulaCH3COCH3
Monoisotopic mass58.0418648 u
CAS number67-64-1
PubChem CID180

How to calculate the molar mass of acetone

3 × 12.011 + 6 × 1.008 + 1 × 15.999 = 58.08 g/mol

  1. Count the atoms in CH3COCH3: C 3, H 6, O 1.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 58.08 g/mol.

Elemental composition of acetone

ElementAtomsAtomic weightMass (g/mol)Mass %
C Carbon312.01136.03362.04%
H Hydrogen61.0086.04810.413%
O Oxygen115.99915.99927.546%

Grams and moles of acetone

AmountEquals
1 g0.017218 mol
10 g0.17218 mol
100 g1.7218 mol
0.1 mol5.808 g
1 mol58.08 g
1 g, in particles1.0369 × 10^22