Molar Mass of Al2S3 (Aluminium Sulphide)

Molar Mass Calculator

What is the molar mass of Al₂S₃?

Answer

M(Al₂S₃) ≈

150.14 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — S: 32.06.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Alaluminium	2	26.982	53.964 w ≈ 35.94%	≈ 35.94%
Ssulfur	3	32.06	96.18 w ≈ 64.06%	≈ 64.06%
Σ = 150.144 ≈ 150.14 g/mol w = 100%				100%

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

Mass fractions of the elements

S 64.06%Al 35.94%

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Molar masses of substances nearby

Formula	M, g/mol
NaI (sodium iodide)	149.89
CsOH (caesium hydroxide)	149.92
C₄H₆O₆ (tartaric acid)	150.086
Al₂S₃ (aluminium sulphide)	150.14
C₁₀H₁₄O (thymol)	150.221
Sm (samarium)	150.36
SnO₂ (tin(IV) oxide)	150.71

FAQ

What is the molar mass of Al2S3?

M(Al₂S₃) ≈ 150.14 g/mol

How to calculate the molar mass of Al₂S₃?

Add up the atomic weights of all the atoms in the formula: 2 × 26.982 + 3 × 32.06 = 150.144 ≈ 150.14 g/mol.

How many grams are in 2 moles of Al₂S₃?

m = n × M = 2 mol × 150.14 g/mol = 300.28 g.

See Also