Molar and molecular weight of C7H8

• Molecular formula: C7H8 or C6H5CH3
• Relative molecular weight of C7H8: 92.13842
• Molar mass of C7H8: 92.13842 g/mol (0.09214 kg/mol)

Calculation of the relative molecular and molar mass of C7H8

• Mr[C7H8] = Ar[C] * 7 + Ar[H] * 8 = 12.0107 * 7 + 1.00794 * 8 = 92.13842
• Molar mass (kg/mol) = Mr[C7H8] : 1000 = 92.13842 : 1000 = 0.09214 kg/mol

C7H8: percent composition by element

• Carbon (C) = 84.0749 : 92.13842 * 100 = 91.248 %
• Hydrogen (H) = 8.06352 : 92.13842 * 100 = 8.752 %

Molar mass calculator