Molar and molecular weight of Au2O12Se3

• Molecular formula: Au2O12Se3 or Au2(SeO4)3
• Relative molecular weight of Au2O12Se3: 822.805938
• Molar mass of Au2O12Se3: 822.805938 g/mol (0.82281 kg/mol)

Calculation of the relative molecular and molar mass of Au2O12Se3

• Mr[Au2O12Se3] = Ar[Au] * 2 + Ar[O] * 12 + Ar[Se] * 3 = 196.966569 * 2 + 15.9994 * 12 + 78.96 * 3 = 822.805938
• Molar mass (kg/mol) = Mr[Au2O12Se3] : 1000 = 822.805938 : 1000 = 0.82281 kg/mol

Au2O12Se3: percent composition by element

• Gold (Au) = 393.933138 : 822.805938 * 100 = 47.877 %
• Oxygen (O) = 191.9928 : 822.805938 * 100 = 23.334 %
• Selenium (Se) = 236.88 : 822.805938 * 100 = 28.789 %

Molar mass calculator