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Find the volume of FeSO4 solution.

What volume of 0.200 M FeSO4 solutions would be necessary to react with 20.0mL of 0.250M KMnO4 (in sulfuric acid solution) according to the following equation?

10FeSO4 + 2KMnO4 + 8H2SO4 → 5Fe2 (SO4)3 + 2MnSO4 + K2SO4 + 8H2O

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