Molar Mass of Li2O (Lithium Oxide)

Molar Mass Calculator

What is the molar mass of Li₂O?

Answer

M(Li₂O) ≈

29.88 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 ≈ 46.45%	≈ 46.45%
Ooxygen	1	15.999	15.999 w ≈ 53.55%	≈ 53.55%
Σ = 29.879 ≈ 29.88 g/mol w = 100%				100%

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

Mass fractions of the elements

O 53.55%Li 46.45%

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Molar masses of substances nearby

Formula	M, g/mol
N₂ (nitrogen)	28.014
C₂H₄ (ethylene)	28.054
Si (silicon)	28.085
Li₂O (lithium oxide)	29.88
NO (nitric oxide)	30.006
CH₂O (formaldehyde)	30.026
C₂H₆ (ethane)	30.070

FAQ

What is the molar mass of Li2O?

M(Li₂O) ≈ 29.88 g/mol

How to calculate the molar mass of Li₂O?

Add up the atomic weights of all the atoms in the formula: 2 × 6.94 + 15.999 = 29.879 ≈ 29.88 g/mol.

How many grams are in 2 moles of Li₂O?

m = n × M = 2 mol × 29.88 g/mol = 59.76 g.

See Also