Molar mass

Molar Mass of Calcium Oxide

The molar mass of calcium oxide (CaO) is 56.077 g/mol.

Calcium Oxide at a glance

PropertyValue
Molar mass56.077 g/mol
Molecular weight56.077 u
Chemical formulaCaO
Monoisotopic mass55.9575055 u
CAS number1305-78-8
PubChem CID14778

How to calculate the molar mass of calcium oxide

1 × 40.078 + 1 × 15.999 = 56.077 g/mol

  1. Count the atoms in CaO: Ca 1, O 1.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 56.077 g/mol.

Elemental composition of calcium oxide

ElementAtomsAtomic weightMass (g/mol)Mass %
Ca Calcium140.07840.07871.47%
O Oxygen115.99915.99928.53%

Grams and moles of calcium oxide

AmountEquals
1 g0.017833 mol
10 g0.17833 mol
100 g1.7833 mol
0.1 mol5.6077 g
1 mol56.077 g
1 g, in particles1.0739 × 10^22