Molar and molecular weight of Al(OH)3

• Relative molecular weight of Al(OH)3: 78.0035586
• Molar mass of Al(OH)3: 78.0035586 g/mol (0.078 kg/mol)

Calculation of the relative molecular and molar mass of Al(OH)3

• Mr[Al(OH)3] = Ar[Al] + Ar[O] * 3 + Ar[H] * 3 = 26.9815386 + 15.9994 * 3 + 1.00794 * 3 = 78.0035586
• Molar mass (kg/mol) = Mr[Al(OH)3] : 1000 = 78.0035586 : 1000 = 0.078 kg/mol

Al(OH)3: percent composition by element

• Aluminum (Al) = 26.9815386 : 78.0035586 * 100 = 34.59 %
• Oxygen (O) = 47.9982 : 78.0035586 * 100 = 61.533 %
• Hydrogen (H) = 3.02382 : 78.0035586 * 100 = 3.877 %

Molar mass calculator