Molar and molecular weight of C8H8O2

• Molecular formula: C8H8O2 or CH3OC6H4CHO
• Relative molecular weight of C8H8O2: 136.14792
• Molar mass of C8H8O2: 136.14792 g/mol (0.13615 kg/mol)

Calculation of the relative molecular and molar mass of C8H8O2

• Mr[C8H8O2] = Ar[C] * 8 + Ar[H] * 8 + Ar[O] * 2 = 12.0107 * 8 + 1.00794 * 8 + 15.9994 * 2 = 136.14792
• Molar mass (kg/mol) = Mr[C8H8O2] : 1000 = 136.14792 : 1000 = 0.13615 kg/mol

C8H8O2: percent composition by element

• Carbon (C) = 96.0856 : 136.14792 * 100 = 70.574 %
• Hydrogen (H) = 8.06352 : 136.14792 * 100 = 5.923 %
• Oxygen (O) = 31.9988 : 136.14792 * 100 = 23.503 %

Molar mass calculator