Molar and molecular weight of C7H8O2

• Molecular formula: C7H8O2 or CH3OC6H4OH
• Relative molecular weight of C7H8O2: 124.13722
• Molar mass of C7H8O2: 124.13722 g/mol (0.12414 kg/mol)

Calculation of the relative molecular and molar mass of C7H8O2

• Mr[C7H8O2] = Ar[C] * 7 + Ar[H] * 8 + Ar[O] * 2 = 12.0107 * 7 + 1.00794 * 8 + 15.9994 * 2 = 124.13722
• Molar mass (kg/mol) = Mr[C7H8O2] : 1000 = 124.13722 : 1000 = 0.12414 kg/mol

C7H8O2: percent composition by element

• Carbon (C) = 84.0749 : 124.13722 * 100 = 67.727 %
• Hydrogen (H) = 8.06352 : 124.13722 * 100 = 6.496 %
• Oxygen (O) = 31.9988 : 124.13722 * 100 = 25.777 %

Molar mass calculator