When a chemical reaction occurs,the total mass of the reactants is equal to the total mass of the products.

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This statement is known as the law of conservation of mass or the law of mass conservation, which is a fundamental principle in chemistry. It means that in a chemical reaction, the total mass of the substances before the reaction is equal to the total mass of the substances after the reaction, and no mass is lost or gained.

When a Chemical Reaction Occurs,the Total Mass of the Reactants