Question

why should we balance a chemical equations​

Answer 1

Explanation:

To get mass equal on both sides.because mass can neither be created or nor be destroy.

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Answer 2

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Why should we balance chemical equations?

or it can be;

Why there is a need to balance the chemical equations?

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According to Law of Conservation of Mass, "Mass can neither be created nor be destroyed." This means the total mass of all the reactants must be equal to the total mass of products(Mass of reactants = Mass of products).In other words, we can say that the number of various types of atoms in the reactants must be equal to the numbers of same types of atoms in products. It is necessary that we have to make the number of different types of atoms equal on both sides of a chemical equation to make the number of different types of atoms equal the reactants & products and to satisfy the law of conservation of mass in chemical reactions.