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A sample of chalk contains clay as impur...

A sample of chalk contains clay as impurity. The clay impurity loses 11% of its weight as moisture on prolong heating. 5 gram sample of chalk on heating shows a loss in weight (due to evolution of `CO_(2)` and water) by 1.1 g. Calculate % of chalk `(CaCO_(3))` in the sample. [Hint : Chalk `(CaCO_(3))` release `CO_(2)` on heating]

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