Explain what is the percentage purity of the original sample

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Question- Suppose that 1.652 g of impure barium hydroxide is dissolved in enough water to produce 200. mL of solution and that 25.0 mL of this solution is titrated to the stoichiometric point with14.7 mL of 0.0825 M HCl(aq). What is the percentage purity of the original sample?

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