Molar and molecular weight of C5H8

• Relative molecular weight of C5H8: 68.11702
• Molar mass of C5H8: 68.11702 g/mol (0.06812 kg/mol)

Calculation of the relative molecular and molar mass of C5H8

• Mr[C5H8] = Ar[C] * 5 + Ar[H] * 8 = 12.0107 * 5 + 1.00794 * 8 = 68.11702
• Molar mass (kg/mol) = Mr[C5H8] : 1000 = 68.11702 : 1000 = 0.06812 kg/mol

C5H8: percent composition by element

• Carbon (C) = 60.0535 : 68.11702 * 100 = 88.162 %
• Hydrogen (H) = 8.06352 : 68.11702 * 100 = 11.838 %

Molar mass calculator