Molar and molecular weight of Ac(OH)3

• Molecular formula: Ac(OH)3 or H3AcO3
• Relative molecular weight of Ac(OH)3: 278.04982
• Molar mass of Ac(OH)3: 278.04982 g/mol (0.27805 kg/mol)

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

• Mr[Ac(OH)3] = Ar[H] * 3 + Ar[Ac] + Ar[O] * 3 = 1.00794 * 3 + 227.0278 + 15.9994 * 3 = 278.04982
• Molar mass (kg/mol) = Mr[Ac(OH)3] : 1000 = 278.04982 : 1000 = 0.27805 kg/mol

Ac(OH)3: percent composition by element

• Hydrogen (H) = 3.02382 : 278.04982 * 100 = 1.088 %
• Actinium (Ac) = 227.0278 : 278.04982 * 100 = 81.65 %
• Oxygen (O) = 47.9982 : 278.04982 * 100 = 17.262 %

Molar mass calculator