Molar Mass of HgSO4 (Mercuric Sulfate): Step by Step

What is the molar mass of HgSO₄?

Answer

M(HgSO₄) ≈

296.65 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Hg: 200.59, S: 32.06.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Hgmercury	1	200.59	200.59 w ≈ 67.62%	≈ 67.62%
Ssulfur	1	32.06	32.06 w ≈ 10.81%	≈ 10.81%
Ooxygen	4	15.999	63.996 w ≈ 21.57%	≈ 21.57%
Σ = 296.646 ≈ 296.65 g/mol w = 100%				100%

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Formula	M, g/mol
C₁₂H₂₅NaO₄S (sodium lauryl sulfate)	288.38
CaI₂ (calcium iodide)	293.88
K₂Cr₂O₇ (potassium dichromate)	294.181
HgSO₄ (mercuric sulfate)	296.65
BaBr₂ (barium bromide)	297.14
SbCl₅ (antimony pentachloride)	299.01
C₁₅H₁₀O₇ (quercetin)	302.238