Molar and molecular weight of C2H6

• Molecular formula: C2H6 or CH3CH3
• Relative molecular weight of C2H6: 30.06904
• Molar mass of C2H6: 30.06904 g/mol (0.03007 kg/mol)

Calculation of the relative molecular and molar mass of C2H6

• Mr[C2H6] = Ar[C] * 2 + Ar[H] * 6 = 12.0107 * 2 + 1.00794 * 6 = 30.06904
• Molar mass (kg/mol) = Mr[C2H6] : 1000 = 30.06904 : 1000 = 0.03007 kg/mol

C2H6: percent composition by element

• Carbon (C) = 24.0214 : 30.06904 * 100 = 79.887 %
• Hydrogen (H) = 6.04764 : 30.06904 * 100 = 20.113 %

Molar mass calculator