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Find out the grams of calcium oxide produced if heating 10.0 grams of calcium carbonate (CaCO₃) produces 4.4 g of carbon dioxide (CO₂) and calcium oxide (CaO).

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10 g

4 g

4.4 g

5.6 g

answer is B.

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Detailed Solution

According to the law of conservation of mass, the total mass of the products is equal to the total mass of the reactants. Mathematically,
Mass of reactants = Mass of Products

Given, mass of the reactant (Calcium Carbonate) =10 g

The mass of Carbon dioxide= 4.4 g

Mass of Calcium Carbonate = Mass of Carbon dioxide + Mass Calcium oxide

10 g = 4.4 g + Mass of calcium oxide

Mass of calcium oxide = 10 $-$ 4.4

Mass of calcium oxide = 5.6 g

Hence, calcium oxide produced will be = 5.6 g

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