45. Solving a chemistry problem

548. Determine the mass of iron wire, which was dissolved in sulfuric acid, after which the mixture of iron ions was reduced to Fe2, the solution was transferred to a volumetric flask with a capacity of 250.0 ml, an aliquot of the solution of 25.00 ml was taken and titrated with a 0.1000 M solution of KMnO4, using 40.00 ml of titrant.