Which of the following illustrates law of conservation of mass ?
Explanation:
12g of carbon monoxide reacts with 32g of oxygen to form 44g of carbon dioxide
1.70g of silver nitrate reacts with 0.365g of Hydrochloric acid to form 1.435g of silver chloride and 0.63g of nitric acid .
12g of carbon burnt exactly in 16g of oxygen to give 44g of carbon dioxide
100g of ice forms 100g of liquid water
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Answer:
The option (A) is a suitable example for illustrating the law of conservation of mass.
18g of water is formed by the combination of 16g oxygen with 2g of hydrogen.
Total mass of reactants =16+2=18 g.
The mass of products =18 g.
Since, the mass of products is equal to the total mass of reactants, the
mass is conserved during the reaction.
Note: The option (A) represents chemical change and all other options represent physical change. The law of conservation of mass corresponds to a chemical change.
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