100g of impure `CaCO_(3)` on heating gives 5.675 it. `CO_(2)` gas at STP. Find the percentage of calcium in the lime stone sample. [At. Wt, Ca=40, C=12, O=16]

500 g impure sample of CaCO_(3) on heating gives 70 g of CaO . Percentage impurities in sample is

500 g impure sample of CaCO_(3) on heating gives 70 g of CaO . Percentage impurities in sample is

5 moles of CaCO_(3) on heating yeilded 2 moles of CO_(2) .Find % yield of reaction.

100g of 90% pure sample of CaCO_(3) on strong heating produces how many litre of CO_(2) at NTP ?

The volume of CO_(2) gas liberated at S.T.P by heating 5 grams of pure lime stone is

1.5g of a mixture of CaCO_(3) and MgCO_(3) , on ignition, produces 360mL of CO_(2) at STP. Calculate the percentage composition of the mixture.

6g of an impure sample of potassium chlorate gives 1.9g of oxygen on heating in presence of a catalyst. What is the percentage of purity of the sample. [K = 39,Cl = 35.5, O = 16]