Molar Mass of CeO2 (Cerium(IV) Oxide)

Molar Mass Calculator

What is the molar mass of CeO₂?

Answer

M(CeO₂) ≈

172.12 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Ce: 140.12.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Cecerium	1	140.12	140.12 w ≈ 81.41%	≈ 81.41%
Ooxygen	2	15.999	31.998 w ≈ 18.59%	≈ 18.59%
Σ = 172.118 ≈ 172.12 g/mol w = 100%				100%

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

Mass fractions of the elements

Ce 81.41%

O 18.59%

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Molar masses of substances nearby

Formula	M, g/mol
BaS (barium sulfide)	169.39
AgNO₃ (silver nitrate)	169.87
Ba(OH)₂ (barium hydroxide)	171.34
CeO₂ (cerium(IV) oxide)	172.12
CaSO₄·2H₂O (calcium sulfate dihydrate)	172.16
Yb (ytterbium)	173.05
C₆H₇NO₃S (sulfanilic acid)	173.19

FAQ

What is the molar mass of CeO2?

M(CeO₂) ≈ 172.12 g/mol

How to calculate the molar mass of CeO₂?

Add up the atomic weights of all the atoms in the formula: 140.12 + 2 × 15.999 = 172.118 ≈ 172.12 g/mol.

How many grams are in 2 moles of CeO₂?

m = n × M = 2 mol × 172.12 g/mol = 344.24 g.

See Also