Enter a balanced equation for the reaction of na2s and cdso4.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Double displacement reaction is one in which exchange of ions take place.

The balanced chemical reaction will be:

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