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A 10 g sample of a mixture of calcium ch...

A 10 g sample of a mixture of calcium chloride and sodium chloride is treated with `Na_(2)CO_(3)` to precipitate calcium as calcium carbonate. This `CaCO_(3)` is heated to convert all the calcium to CaO and the final mass of CaO is 1.12gm. Calculate % by mass of NaCl in the original mixture.

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