Molar and molecular weight of I2O5

• Relative molecular weight of I2O5: 333.80594
• Molar mass of I2O5: 333.80594 g/mol (0.33381 kg/mol)

Calculation of the relative molecular and molar mass of I2O5

• Mr[I2O5] = Ar[I] * 2 + Ar[O] * 5 = 126.90447 * 2 + 15.9994 * 5 = 333.80594
• Molar mass (kg/mol) = Mr[I2O5] : 1000 = 333.80594 : 1000 = 0.33381 kg/mol

I2O5: percent composition by element

• Iodine (I) = 253.80894 : 333.80594 * 100 = 76.035 %
• Oxygen (O) = 79.997 : 333.80594 * 100 = 23.965 %

Molar mass calculator