write the low of chemical combination?
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Law of Chemical Combination. (1) Law of Conservation of Mass. In a chemical change, total mass remains conserved. i.e. mass before the reaction is equal to mass after the reaction. H2(g)+Cl2(g)⟶2HCl.
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The chemical reactions between two or more substances giving rise to product is governed by certain laws , these laws are called law of chemical combination .
There are two laws of chemical combination for 9th class -
1. law of conservation of mass
2. law of constant proportion
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