Molar Mass of Cr(OH)3

Molar Mass Calculator

What is the molar mass of Cr(OH)₃?

Answer

M(Cr(OH)₃) =

103.017 g/mol

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

Cr(OH)₃ = Cr + 3 × (O + H) → Cr 1, O 3, H 3

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Crchromium	1	51.996	51.996 w ≈ 50.47%	≈ 50.47%
Ooxygen	3	15.999	47.997 w ≈ 46.59%	≈ 46.59%
Hhydrogen	3	1.0080	3.0240 w ≈ 2.94%	≈ 2.94%
Σ = 103.017 g/mol w = 100%				100%

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

Mass fractions of the elements

Cr 50.47%O 46.59%

H 2.94%

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Molar masses of substances nearby

Formula	M, g/mol
C₆H₁₃OH	102.177
NaBr (sodium bromide)	102.894
Rh (rhodium)	102.91
Cr(OH)₃	103.017
ZnF₂ (zinc fluoride)	103.38
SrO (strontium oxide)	103.62
NaHSO₃ (sodium hydrogen sulfite)	104.06

FAQ

What is the molar mass of Cr(OH)3?

M(Cr(OH)₃) = 103.017 g/mol

How to calculate the molar mass of Cr(OH)₃?

Add up the atomic weights of all the atoms in the formula: 51.996 + 3 × 15.999 + 3 × 1.0080 = 103.017 g/mol.

How many grams are in 2 moles of Cr(OH)₃?

m = n × M = 2 mol × 103.017 g/mol = 206.034 g.

See Also