Molar and molecular weight of C9H12

• Molecular formula: C9H12 or C6H3(CH3)3
• Relative molecular weight of C9H12: 120.19158
• Molar mass of C9H12: 120.19158 g/mol (0.12019 kg/mol)

Calculation of the relative molecular and molar mass of C9H12

• Mr[C9H12] = Ar[C] * 9 + Ar[H] * 12 = 12.0107 * 9 + 1.00794 * 12 = 120.19158
• Molar mass (kg/mol) = Mr[C9H12] : 1000 = 120.19158 : 1000 = 0.12019 kg/mol

C9H12: percent composition by element

• Carbon (C) = 108.0963 : 120.19158 * 100 = 89.937 %
• Hydrogen (H) = 12.09528 : 120.19158 * 100 = 10.063 %

Molar mass calculator