Molar Mass of SF6 (Sulfur Hexafluoride)

Molar Mass Calculator

What is the molar mass of SF₆?

Answer

M(SF₆) ≈

146.05 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
Ssulfur	1	32.06	32.06 w ≈ 21.95%	≈ 21.95%
Ffluorine	6	18.998	113.988 w ≈ 78.05%	≈ 78.05%
Σ = 146.048 ≈ 146.05 g/mol w = 100%				100%

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

Mass fractions of the elements

F 78.05%

S 21.95%

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Molar masses of substances nearby

Formula	M, g/mol
Nd (neodymium)	144.24
NH₄I (ammonium iodide)	144.94
H₂O₄Se (selenic acid)	144.983
SF₆ (sulfur hexafluoride)	146.05
C₆H₁₀O₄ (adipic acid)	146.142
C₆H₁₄N₂O₂ (DL-lysine)	146.190
Cd(OH)₂ (cadmium hydroxide)	146.42

FAQ

What is the molar mass of SF6?

M(SF₆) ≈ 146.05 g/mol

How to calculate the molar mass of SF₆?

Add up the atomic weights of all the atoms in the formula: 32.06 + 6 × 18.998 = 146.048 ≈ 146.05 g/mol.

How many grams are in 2 moles of SF₆?

m = n × M = 2 mol × 146.05 g/mol = 292.10 g.

See Also