In a reaction 5.0 grams of calcium carbonate on heating gave 2.8 grams of calcium oxide and 2.2 grams of carbon dioxide, showing that these observations are in agreement with the law of conservation of mass.
$Calcium carbonate \overset{heat}{\to} Calcium oxide + Carbon dioxide$

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Solution

$Calcium carbonate \overset{heat}{\to} Calcium oxide + Carbon dioxide$
Mass of reactant= Mass of calcium carbonate =5 grams
Mass of product =Mass of calcium oxide + Mass of carbon dioxide
=2.8+2.2=5 grams
Thus, Mass of reactant =Mass of product
Hence these observations are in agreement with the law of conservation of mass.

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In a reaction 5.0 grams of calcium carbonate on heating gave 2.8 grams of calcium oxide and 2.2 grams of carbon dioxide, showing that these observations are in agreement with the law of conservation of mass.Calciumcarbonate→heatCalciumoxide+Carbondioxide

Calciumcarbonate→heatCalciumoxide+CarbondioxideMass of reactant= Mass of calcium carbonate =5 gramsMass of product =Mass of calcium oxide + Mass of carbon dioxide =2.8+2.2=5 gramsThus, Mass of reactant =Mass of productHence these observations are in agreement with the law of conservation of mass.

In a reaction 5.0 grams of calcium carbonate on heating gave 2.8 grams of calcium oxide and 2.2 grams of carbon dioxide, showing that these observations are in agreement with the law of conservation of mass.
$Calcium carbonate \overset{heat}{\to} Calcium oxide + Carbon dioxide$