Molar Mass of P4O10 (Phosphorus Pentoxide)

Molar Mass Calculator

What is the molar mass of P₄O₁₀?

Answer

M(P₄O₁₀) =

283.886 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
Pphosphorus	4	30.974	123.896 w ≈ 43.64%	≈ 43.64%
Ooxygen	10	15.999	159.990 w ≈ 56.36%	≈ 56.36%
Σ = 283.886 g/mol w = 100%				100%

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

Mass fractions of the elements

O 56.36%P 43.64%

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Molar masses of substances nearby

Formula	M, g/mol
PbCl₂ (lead chloride)	278.1
MgI₂ (magnesium iodide)	278.11
C₁₈H₃₄O₂ (oleic acid)	282.468
P₄O₁₀ (phosphorus pentoxide)	283.886
FeH₈N₂O₈S₂ (ferrous ammonium sulfate)	284.04
C₁₈H₃₆O₂ (stearic acid)	284.484
Na₂CO₃·10H₂O (sodium carbonate decahydrate)	286.138

FAQ

What is the molar mass of P4O10?

M(P₄O₁₀) = 283.886 g/mol

How to calculate the molar mass of P₄O₁₀?

Add up the atomic weights of all the atoms in the formula: 4 × 30.974 + 10 × 15.999 = 283.886 g/mol.

How many grams are in 2 moles of P₄O₁₀?

m = n × M = 2 mol × 283.886 g/mol = 567.772 g.

See Also