136. Solving a chemistry problem
A portion of 1.823 g of hydrated aluminum nitrate (Al(NO3)3*9H2O) was dissolved and diluted with water in a volumetric flask with a capacity of 100.0 cm3. To a 10.00 cm3 aliquot of this solution was added an excess of magnesium complexonate. The average value of the volume of a 0.02503 M complexone III solution used for titration of the released magnesium ions was 18.55 cm3. Calculate the mass fraction of aluminum nitrate in the crystal hydrate.
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