Molar and molecular weight of C2H4

• Relative molecular weight of C2H4: 28.05316
• Molar mass of C2H4: 28.05316 g/mol (0.02805 kg/mol)

Calculation of the relative molecular and molar mass of C2H4

• Mr[C2H4] = Ar[C] * 2 + Ar[H] * 4 = 12.0107 * 2 + 1.00794 * 4 = 28.05316
• Molar mass (kg/mol) = Mr[C2H4] : 1000 = 28.05316 : 1000 = 0.02805 kg/mol

C2H4: percent composition by element

• Carbon (C) = 24.0214 : 28.05316 * 100 = 85.628 %
• Hydrogen (H) = 4.03176 : 28.05316 * 100 = 14.372 %

Molar mass calculator