Molar mass of As2O5

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of As2O5 is 229.8402 g/mol

Formula in Hill system is As2O5

Elemental composition of As2O5:

Symbol	Element	Atomic weight	Atoms	Mass percent
As	Arsenic	74.92160	2	65.1945 %
O	Oxygen	15.9994	5	34.8055 %

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Computing molar mass (molar weight)

To calculate molar mass of a chemical compound enter its formula and click 'Calculate!'. In chemical formula you may use:

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Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg
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Examples of molar mass computations: NaCl, Ca(OH)2, K4[Fe(CN)6], CuSO4*5H2O, water, nitric acid, potassium permanganate, ethanol, fructose.

Computing molecular weight (molecular mass)

To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.
Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2.

Definitions of molecular mass, molecular weight, molar mass and molar weight

Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.

Weights of atoms and isotopes are from NIST article.

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