Molar and molecular weight of CH3(CH2)7CH3

• Molecular formula: CH3(CH2)7CH3 or C9H20
• Relative molecular weight of CH3(CH2)7CH3: 128.2551
• Molar mass of CH3(CH2)7CH3: 128.2551 g/mol (0.12826 kg/mol)

Calculation of the relative molecular and molar mass of CH3(CH2)7CH3

• Mr[CH3(CH2)7CH3] = Ar[C] * 9 + Ar[H] * 20 = 12.0107 * 9 + 1.00794 * 20 = 128.2551
• Molar mass (kg/mol) = Mr[CH3(CH2)7CH3] : 1000 = 128.2551 : 1000 = 0.12826 kg/mol

CH3(CH2)7CH3: percent composition by element

• Carbon (C) = 108.0963 : 128.2551 * 100 = 84.282 %
• Hydrogen (H) = 20.1588 : 128.2551 * 100 = 15.718 %

Molar mass calculator