10 g sample of zinc was dissolved in 200 ml of 0.1 N KMnO4 solution acidified with H2SO4.The KMnO4 solution was totally discharged.It was found that a gas was produced which when allowed to react with the requisite amount of oxygen and sparked and condensed showed a total volume contraction of 1500 ml at STP.Calculate mass percent of zinc in the sample.
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