Molar and molecular weight of NaOH

• Molecular formula: NaOH or HNaO
• Relative molecular weight of NaOH: 39.99710928
• Molar mass of NaOH: 39.99710928 g/mol (0.04 kg/mol)

Calculation of the relative molecular and molar mass of NaOH

• Mr[NaOH] = Ar[H] + Ar[Na] + Ar[O] = 1.00794 + 22.98976928 + 15.9994 = 39.99710928
• Molar mass (kg/mol) = Mr[NaOH] : 1000 = 39.99710928 : 1000 = 0.04 kg/mol

NaOH: percent composition by element

• Hydrogen (H) = 1.00794 : 39.99710928 * 100 = 2.52 %
• Sodium (Na) = 22.98976928 : 39.99710928 * 100 = 57.479 %
• Oxygen (O) = 15.9994 : 39.99710928 * 100 = 40.001 %

Molar mass calculator