what is a chemical equation? why is it necessary to balance an equation?
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A chemical equation should always be balanced because the law of conservation of mass states that matter can neither be created nor destroyed so in a chemical equation the total mass of reactants must be equal to the mass of products formed i.e. the total number of atoms of each element should be equal
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a chemical equation is a symbolic representation of a chemical reaction . Here we use symbols and formulas for the substance involved in the reaction . According to law of conservation of the mass matter can neither be created nor be destroyed in a chemical reaction .
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