KAl(SO4)2*12H2O
 Enter a chemical formula to calculate its molar mass and elemental composition: Molar mass of KAl(SO4)2*12H2O is 474.3884 g/mol Convert between KAl(SO4)2*12H2O weight and molesCompoundMolesWeight, g
Elemental composition of KAl(SO4)2*12H2OElementSymbolAtomic weightAtomsMass percent
 Potassium K 39.0983 1 8.2418 Aluminum Al 26.9815 1 5.6876 Hydrogen H 1.00794 24 5.0993 Oxygen O 15.9994 20 67.4527 Sulfur S 32.065 2 13.5185
Mass percent compositionAtomic percent composition

Formula in Hill system is AlH24KO20S2

### Computing molar mass (molar weight)

To calculate molar mass of a chemical compound enter its formula and click "Compute". In chemical formula you may use:Any chemical element. Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al.Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmgparantesis () or brackets <>.Common compound names.Examples of molar mass computations: NaCl, Ca(OH)2, K4,CuSO4*5H2O,water,nitric acid,potassium permanganate,ethanol,fructose.

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Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.

### 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.

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### 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.Related: Molecular weights of amino acidsmolecular weights calculated today Please let us know how we can improve this web app.