Molar Mass of PbSO4 (Lead Sulfate): Step by Step

What is the molar mass of PbSO₄?

Answer

M(PbSO₄) ≈

303.3 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Pb: 207.2.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Pblead	1	207.2	207.2 w ≈ 68.33%	≈ 68.33%
Ssulfur	1	32.06	32.06 w ≈ 10.57%	≈ 10.57%
Ooxygen	4	15.999	63.996 w ≈ 21.10%	≈ 21.10%
Σ = 303.256 ≈ 303.3 g/mol w = 100%				100%

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Formula	M, g/mol
BaBr₂ (barium bromide)	297.14
SbCl₅ (antimony pentachloride)	299.01
C₁₅H₁₀O₇ (quercetin)	302.238
PbSO₄ (lead sulfate)	303.3
Ba(ClO₃)₂ (barium chlorate)	304.22
Ca₃(PO₄)₂ (tricalcium phosphate)	310.174
Ag₂SO₄ (silver sulfate)	311.80