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Question

10.0 g of CaCO3 on heating gives 4.4 g of CO2 and 5.6 g of CaO. Which of the following law supports the above observation?

A
Law of constant composition
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B
Law of multiple proportions
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C
Law of reciprocal proportion
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D
Law of conservation of mass
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Solution

The correct option is D Law of conservation of mass
Law of conservation of mass states that matter can be changed from one form to another but the total amount of mass remains constant. The total mass of the products formed is the same as the total mass of the reactants.

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