A 1.50gm samples of type metal (an alloy...

A 1.50gm samples of type metal (an alloy of `S_(n)`, Pb, Cu and Sb) is dissolved in nitric acid and metastannic acid, `H_(2)SnO_(3)` precipitate. This is dehydrated by heating to Tin(IV) oxide, which is found to weigh 0.50gm. What percentage of tin was in the original type metal sample? (Sn= 119)

0.3333

0.2627

0.2938

0.5254

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