Molar and molecular weight of CH3

• Relative molecular weight of CH3: 15.03452
• Molar mass of CH3: 15.03452 g/mol (0.01503 kg/mol)

Calculation of the relative molecular and molar mass of CH3

• Mr[CH3] = Ar[C] + Ar[H] * 3 = 12.0107 + 1.00794 * 3 = 15.03452
• Molar mass (kg/mol) = Mr[CH3] : 1000 = 15.03452 : 1000 = 0.01503 kg/mol

CH3: percent composition by element

• Carbon (C) = 12.0107 : 15.03452 * 100 = 79.887 %
• Hydrogen (H) = 3.02382 : 15.03452 * 100 = 20.113 %

Molar mass calculator