Molar and molecular weight of Mg3(BO3)2

• Molecular formula: Mg3(BO3)2 or B2Mg3O6
• Relative molecular weight of Mg3(BO3)2: 190.5334
• Molar mass of Mg3(BO3)2: 190.5334 g/mol (0.19053 kg/mol)

Calculation of the relative molecular and molar mass of Mg3(BO3)2

• Mr[Mg3(BO3)2] = Ar[B] * 2 + Ar[Mg] * 3 + Ar[O] * 6 = 10.811 * 2 + 24.305 * 3 + 15.9994 * 6 = 190.5334
• Molar mass (kg/mol) = Mr[Mg3(BO3)2] : 1000 = 190.5334 : 1000 = 0.19053 kg/mol

Mg3(BO3)2: percent composition by element

• Boron (B) = 21.622 : 190.5334 * 100 = 11.348 %
• Magnesium (Mg) = 72.915 : 190.5334 * 100 = 38.269 %
• Oxygen (O) = 95.9964 : 190.5334 * 100 = 50.383 %

Molar mass calculator