Molar and molecular weight of C8H8

• Relative molecular weight of C8H8: 104.14912
• Molar mass of C8H8: 104.14912 g/mol (0.10415 kg/mol)

Calculation of the relative molecular and molar mass of C8H8

• Mr[C8H8] = Ar[C] * 8 + Ar[H] * 8 = 12.0107 * 8 + 1.00794 * 8 = 104.14912
• Molar mass (kg/mol) = Mr[C8H8] : 1000 = 104.14912 : 1000 = 0.10415 kg/mol

C8H8: percent composition by element

• Carbon (C) = 96.0856 : 104.14912 * 100 = 92.258 %
• Hydrogen (H) = 8.06352 : 104.14912 * 100 = 7.742 %

Molar mass calculator