Molar Mass of Na2S (Sodium Sulfide)

Molar Mass Calculator
Chemical formula Write symbols with a capital letter: CoCl2 is cobalt chloride, COCl2 is phosgene. A hydrate takes a dot: CuSO4·5H2O or CuSO4.5H2O

What is the molar mass of Na2S?

Answer

M(Na2S) =
78.04 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024).

Contribution of each element
Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
Nasodium222.99045.980 w ≈ 58.92%
Ssulfur132.0632.06 w ≈ 41.08%
Σ = 78.04 g/mol w = 100%

Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

Mass fractions of the elements

Related Calculations

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Recalculate with different values ↑

Molar masses of substances nearby

FormulaM, g/mol
CS₂ (carbon disulfide)76.13
CH₃COONH₄ (ammonium acetate)77.083
Al(OH)₃ (aluminum hydroxide)78.003
Na₂S (sodium sulfide)78.04
CaF₂ (calcium fluoride)78.074
H₂SiO₃ (metasilicic acid)78.098
C₆H₆ (benzene)78.114

FAQ

What is the molar mass of Na2S?

M(Na₂S) = 78.04 g/mol

How to calculate the molar mass of Na₂S?

Add up the atomic weights of all the atoms in the formula: 2 × 22.990 + 32.06 = 78.04 g/mol.

How many grams are in 2 moles of Na₂S?

m = n × M = 2 mol × 78.04 g/mol = 156.08 g.

See Also