Molar and molecular weight of C12H8I2

• Relative molecular weight of C12H8I2: 406.00086
• Molar mass of C12H8I2: 406.00086 g/mol (0.406 kg/mol)

Calculation of the relative molecular and molar mass of C12H8I2

• Mr[C12H8I2] = Ar[C] * 12 + Ar[H] * 8 + Ar[I] * 2 = 12.0107 * 12 + 1.00794 * 8 + 126.90447 * 2 = 406.00086
• Molar mass (kg/mol) = Mr[C12H8I2] : 1000 = 406.00086 : 1000 = 0.406 kg/mol

C12H8I2: percent composition by element

• Carbon (C) = 144.1284 : 406.00086 * 100 = 35.5 %
• Hydrogen (H) = 8.06352 : 406.00086 * 100 = 1.986 %
• Iodine (I) = 253.80894 : 406.00086 * 100 = 62.514 %

Molar mass calculator