What is the need to balance a chemical equation explain ?
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equations should be balanced because:
the law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. thus in a chemical reaction the total mass of the reactants should be equal to the total mass of the products.
example: 2Mg+O2=2MgO
the law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction. thus in a chemical reaction the total mass of the reactants should be equal to the total mass of the products.
example: 2Mg+O2=2MgO
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