Molar Mass of Cr2O3 (Dichromium Trioxide)

Molar Mass Calculator
Chemical formula Write symbols with a capital letter: CoCl2 is cobalt chloride, COCl2 is phosgene. A hydrate takes a dot: CuSO4·5H2O or CuSO4.5H2O

What is the molar mass of Cr2O3?

Answer

M(Cr2O3) =
151.989 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024).

Contribution of each element
Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
Crchromium251.996103.992 w ≈ 68.42%
Ooxygen315.99947.997 w ≈ 31.58%
Σ = 151.989 g/mol w = 100%

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

Mass fractions of the elements

O 31.58%

Related Calculations

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Recalculate with different values ↑

Molar masses of substances nearby

FormulaM, g/mol
C₈H₉NO₂ (paracetamol)151.165
FeSO₄ (iron(II) sulfate)151.90
Eu (europium)151.96
Cr₂O₃ (dichromium trioxide)151.989
C₈H₈O₃152.149
C₁₀H₁₆O (camphor)152.237
BaO (barium oxide)153.33

FAQ

What is the molar mass of Cr2O3?

M(Cr₂O₃) = 151.989 g/mol

How to calculate the molar mass of Cr₂O₃?

Add up the atomic weights of all the atoms in the formula: 2 × 51.996 + 3 × 15.999 = 151.989 g/mol.

How many grams are in 2 moles of Cr₂O₃?

m = n × M = 2 mol × 151.989 g/mol = 303.978 g.

See Also