Molar and molecular weight of CH3I

• Relative molecular weight of CH3I: 141.93899
• Molar mass of CH3I: 141.93899 g/mol (0.14194 kg/mol)

Calculation of the relative molecular and molar mass of CH3I

• Mr[CH3I] = Ar[C] + Ar[H] * 3 + Ar[I] = 12.0107 + 1.00794 * 3 + 126.90447 = 141.93899
• Molar mass (kg/mol) = Mr[CH3I] : 1000 = 141.93899 : 1000 = 0.14194 kg/mol

CH3I: percent composition by element

• Carbon (C) = 12.0107 : 141.93899 * 100 = 8.462 %
• Hydrogen (H) = 3.02382 : 141.93899 * 100 = 2.13 %
• Iodine (I) = 126.90447 : 141.93899 * 100 = 89.408 %

Molar mass calculator