Question

why should we balance
a chemical equation 10

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Answer 1

According to law of conservation of mass, when a chemical reaction occurs, the mass of the products should be equal to mass of the reactants. Therefore, the amount of the atoms in each element does not change in the chemical reaction. As a result chemical equation needs to be balanced.

Answer 2

Explanation:

Remember, chemical reactions follow the law of conservation of mass. Chemical equations show this conservation, or equality, in terms of atoms. You have to balance the equation to make the number of atoms equal on each side of an equation