An impure sample of zinc (Zn) is treated with an excess of sulfuric acid (H2SO4) to form zinc sulfate (ZnSO4) and molecular hydrogen (H2). (a) Write a balanced equation for the reaction, (b)If 0.0764 g of H2 is obtained from 3.86 g of the sample, calculate the percent purity of the sample, (c) What assumptions must you make in part (b)?
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