50 g of calcium carbonate sample decomposes on heating to give calcium oxide and 20 g of carbon dioxide. The approximate purity of calcium carbonate sample is 95%78%91%82%

50 g of calcium carbonate sample decomposes on heating to give calcium

1.	50 g of calcium carbonate sample decomposes on heating to give calcium oxide and 20 g of carbon dioxide. The approximate purity of calcium carbonate sample is 95%78%91%82%
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