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Some Basic Concepts of Chemistry
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13/08/2021 10:44 am
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20 g of CaCO3 on heating gave 8.8 g of CO2 and 11.2 g of CaO. This is in accordance with
(a) The law of conservation of mass.
(b) The law of constant composition.
(c) The law of reciprocal proportion.
(d) None of these
1 Answer
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13/08/2021 10:49 am
Correct answer: (a) The law of conservation of mass.
Explanation:
CaCO3 → CaO + CO2
20g 8.8g 11.2g
mass of reactant = mass of products = 20g.
Hence the law of conservation of mass is obeyed.