Molar mass

Molar Mass of Aluminum Hydroxide

The molar mass of aluminum hydroxide (Al(OH)3) is 78.003 g/mol.

Aluminum Hydroxide at a glance

PropertyValue
Molar mass78.003 g/mol
Molecular weight78.003 u
Chemical formulaAl(OH)3
Monoisotopic mass77.9897575 u
CAS number21645-51-2
PubChem CID10176082

How to calculate the molar mass of aluminum hydroxide

1 × 26.982 + 3 × 15.999 + 3 × 1.008 = 78.003 g/mol

  1. Count the atoms in Al(OH)3: Al 1, O 3, H 3.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 78.003 g/mol.

Elemental composition of aluminum hydroxide

ElementAtomsAtomic weightMass (g/mol)Mass %
Al Aluminum126.98226.98234.591%
O Oxygen315.99947.99761.532%
H Hydrogen31.0083.0243.8768%

Grams and moles of aluminum hydroxide

AmountEquals
1 g0.01282 mol
10 g0.1282 mol
100 g1.282 mol
0.1 mol7.8003 g
1 mol78.003 g
1 g, in particles7.7204 × 10^21