Molar and molecular weight of C9H18

• Molecular formula: C9H18 or C6H9(CH3)3
• Relative molecular weight of C9H18: 126.23922
• Molar mass of C9H18: 126.23922 g/mol (0.12624 kg/mol)

Calculation of the relative molecular and molar mass of C9H18

• Mr[C9H18] = Ar[C] * 9 + Ar[H] * 18 = 12.0107 * 9 + 1.00794 * 18 = 126.23922
• Molar mass (kg/mol) = Mr[C9H18] : 1000 = 126.23922 : 1000 = 0.12624 kg/mol

C9H18: percent composition by element

• Carbon (C) = 108.0963 : 126.23922 * 100 = 85.628 %
• Hydrogen (H) = 18.14292 : 126.23922 * 100 = 14.372 %

Molar mass calculator