Molar Mass of PbCO3 (Lead Carbonate)

Molar Mass Calculator

What is the molar mass of PbCO₃?

Answer

M(PbCO₃) ≈

267.2 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 ≈ 77.54%	≈ 77.54%
Ccarbon	1	12.011	12.011 w ≈ 4.50%	≈ 4.50%
Ooxygen	3	15.999	47.997 w ≈ 17.96%	≈ 17.96%
Σ = 267.208 ≈ 267.2 g/mol w = 100%				100%

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

Mass fractions of the elements

Pb 77.54%

O 17.96%C 4.50%

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Molar masses of substances nearby

Formula	M, g/mol
Na₂Cr₂O₇ (sodium dichromate)	261.965
Mg₃(PO₄)₂ (magnesium phosphate)	262.855
AlBr₃ (aluminum bromide)	266.694
PbCO₃ (lead carbonate)	267.2
HgCl₂ (mercuric chloride)	271.49
Ag₂CO₃ (silver carbonate)	275.75
FeSO₄·7H₂O (ferrous sulfate heptahydrate)	278.01

FAQ

What is the molar mass of PbCO3?

M(PbCO₃) ≈ 267.2 g/mol

How to calculate the molar mass of PbCO₃?

Add up the atomic weights of all the atoms in the formula: 207.2 + 12.011 + 3 × 15.999 = 267.208 ≈ 267.2 g/mol.

How many grams are in 2 moles of PbCO₃?

m = n × M = 2 mol × 267.2 g/mol = 534.4 g.

See Also