A sample of impure tin of mass 0.535 g is dissolved in strong acid to give a
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A sample of impure tin of mass 0.535 g is dissolved in strong acid to give a solution of Sn2+. The solution is then titrated with a 0.0448 M solution of NO3¯, which is reduced to NO(g). The equivalence point is reached upon the addition of 0.0344 L of the NO3¯ solution. Find the percent by mass of tin in the original sample, assuming that it contains no other reducing agents.
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