Molar Mass of H2O4Se (Selenic Acid)

Molar Mass Calculator

What is the molar mass of H₂O₄Se?

Answer

M(H₂O₄Se) =

144.983 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	Mass fraction, w
Hhydrogen	2	1.0080	2.0160 w ≈ 1.39%	≈ 1.39%
Ooxygen	4	15.999	63.996 w ≈ 44.14%	≈ 44.14%
Seselenium	1	78.971	78.971 w ≈ 54.47%	≈ 54.47%
Σ = 144.983 g/mol w = 100%				100%

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

Mass fractions of the elements

Se 54.47%O 44.14%

H 1.39%

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Molar masses of substances nearby

Formula	M, g/mol
NaC₆H₅CO₂ (sodium benzoate)	144.105
Nd (neodymium)	144.24
NH₄I (ammonium iodide)	144.94
H₂O₄Se (selenic acid)	144.983
SF₆ (sulfur hexafluoride)	146.05
C₆H₁₀O₄ (adipic acid)	146.142
C₆H₁₄N₂O₂ (DL-lysine)	146.190

FAQ

What is the molar mass of H2O4Se?

M(H₂O₄Se) = 144.983 g/mol

How to calculate the molar mass of H₂O₄Se?

Add up the atomic weights of all the atoms in the formula: 2 × 1.0080 + 4 × 15.999 + 78.971 = 144.983 g/mol.

How many grams are in 2 moles of H₂O₄Se?

m = n × M = 2 mol × 144.983 g/mol = 289.966 g.

See Also