What Is The Molar Mass Of Sodium Sulfide Nonahydrate?

The molar mass of sodium sulfide nonahydrate can be calculated by adding the molar masses of its individual components. Sodium sulfide has a molar mass of 78.045 g/mol (22.99 g/mol for sodium and 55.96 g/mol for sulfur), while nonahydrate means there are nine water molecules (H2O) per formula unit, each with a molar mass of 18.015 g/mol. Therefore, the molar mass of sodium sulfide nonahydrate is:

Molar mass = [molar mass of Na2S] + ([molar mass of H2O] x 9)

Molar mass = (22.99 g/mol x 2) + (18.015 g/mol x 9)

Molar mass = 126.04 g/mol

Therefore, the molar mass of sodium sulfide nonahydrate is 126.04 g/mol.