Question

3. In a reaction, 5.0 g of calcium carbonate on heating gave 2.8 g of calcium oxide and 2.2 g of carbon dioxide
Show that these observations are in agreement with the law of conservation of mass.
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Answer 1

Answer:

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Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Given: mass of calcium carbonate = 5.0 g

Mass of products = Mass of calcium oxide + mass of carbon dioxide= 2.8 g + 2.2 g

As mass of reactant = mass of products

mass of calcium carbonate = Mass of calcium oxide + mass of carbon dioxide

5.0 g = 5.0 g

Thus results are in accordance with the law of conservation of mass.​