Molar and molecular weight of C7H7NO2

• Molecular formula: C7H7NO2 or CH3C6H4NO2
• Relative molecular weight of C7H7NO2: 137.13598
• Molar mass of C7H7NO2: 137.13598 g/mol (0.13714 kg/mol)

Calculation of the relative molecular and molar mass of C7H7NO2

• Mr[C7H7NO2] = Ar[C] * 7 + Ar[H] * 7 + Ar[N] + Ar[O] * 2 = 12.0107 * 7 + 1.00794 * 7 + 14.0067 + 15.9994 * 2 = 137.13598
• Molar mass (kg/mol) = Mr[C7H7NO2] : 1000 = 137.13598 : 1000 = 0.13714 kg/mol

C7H7NO2: percent composition by element

• Carbon (C) = 84.0749 : 137.13598 * 100 = 61.308 %
• Hydrogen (H) = 7.05558 : 137.13598 * 100 = 5.145 %
• Nitrogen (N) = 14.0067 : 137.13598 * 100 = 10.214 %
• Oxygen (O) = 31.9988 : 137.13598 * 100 = 23.334 %

Molar mass calculator