Molar mass

Molar Mass of Sodium Sulfide

The molar mass of sodium sulfide (Na2S) is 78.04 g/mol.

Sodium Sulfide at a glance

PropertyValue
Molar mass78.04 g/mol
Molecular weight78.04 u
Chemical formulaNa2S
Monoisotopic mass77.9516097 u
PubChem CID14804

How to calculate the molar mass of sodium sulfide

2 × 22.99 + 1 × 32.06 = 78.04 g/mol

  1. Count the atoms in Na2S: Na 2, S 1.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 78.04 g/mol.

Elemental composition of sodium sulfide

ElementAtomsAtomic weightMass (g/mol)Mass %
Na Sodium222.9945.9858.919%
S Sulfur132.0632.0641.081%

Grams and moles of sodium sulfide

AmountEquals
1 g0.012814 mol
10 g0.12814 mol
100 g1.2814 mol
0.1 mol7.804 g
1 mol78.04 g
1 g, in particles7.7167 × 10^21