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(c) CaCO3△CaO+CO2
10.0 g 5.6 g 4.4 g
Since, mass of reactant = Mass of product
10.0 g=4.4 g+5.6 g
10.0 g=10.0 g
So, the law of conservation of mass is constant.
(a) The weights of the flask and its contents do not change before and after reaction.
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