Molar Mass of CrO3 (Chromium 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 CrO3?

Answer

M(CrO3) =
99.993 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
Crchromium151.99651.996 w ≈ 52.00%
Ooxygen315.99947.997 w ≈ 48.00%
Σ = 99.993 g/mol w = 100%

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

Mass fractions of the elements

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Recalculate with different values ↑

Molar masses of substances nearby

FormulaM, g/mol
COCl₂ (phosgene)98.91
CuCl (cuprous chloride)99.00
Zn(OH)₂ (zinc hydroxide)99.39
CrO₃ (chromium trioxide)99.993
CaCO₃ (calcium carbonate)100.086
KHCO₃ (potassium hydrogen carbonate)100.114
C₆H₁₂O (cyclohexanol)100.161

FAQ

What is the molar mass of CrO3?

M(CrO₃) = 99.993 g/mol

How to calculate the molar mass of CrO₃?

Add up the atomic weights of all the atoms in the formula: 51.996 + 3 × 15.999 = 99.993 g/mol.

How many grams are in 2 moles of CrO₃?

m = n × M = 2 mol × 99.993 g/mol = 199.986 g.

See Also