Molar Mass of Li2CO3 (Lithium Carbonate)

Molar Mass Calculator

What is the molar mass of Li₂CO₃?

Answer

M(Li₂CO₃) ≈

73.89 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Li: 6.94.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Lilithium	2	6.94	13.88 w ≈ 18.79%	≈ 18.79%
Ccarbon	1	12.011	12.011 w ≈ 16.26%	≈ 16.26%
Ooxygen	3	15.999	47.997 w ≈ 64.96%	≈ 64.96%
Σ = 73.888 ≈ 73.89 g/mol w = 100%				100%

Each fraction is rounded on its own, so the printed ones add up to 100.01%; unrounded, they make exactly 100%.

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

Mass fractions of the elements

O 64.96%

Li 18.79%C 16.26%

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Molar masses of substances nearby

Formula	M, g/mol
C₅H₁₂ (n-pentane)	72.151
Ge (germanium)	72.630
C₄H₁₁N (diethylamine)	73.139
Li₂CO₃ (lithium carbonate)	73.89
C₃H₆O₂ (propionic acid)	74.079
Ca(OH)₂ (calcium hydroxide)	74.092
CH₃CH₂OCH₂CH₃ (diethyl ether)	74.123

FAQ

What is the molar mass of Li2CO3?

M(Li₂CO₃) ≈ 73.89 g/mol

How to calculate the molar mass of Li₂CO₃?

Add up the atomic weights of all the atoms in the formula: 2 × 6.94 + 12.011 + 3 × 15.999 = 73.888 ≈ 73.89 g/mol.

How many grams are in 2 moles of Li₂CO₃?

m = n × M = 2 mol × 73.89 g/mol = 147.78 g.

See Also