Which statement correctly represents the law of the conservation of mass? F. The number of atoms on the reactants side is more than the number of atoms on the product side.

G. The number of atoms on the reactant side is less than the number of atoms on the product side.

H. The number of atoms on the reactant side equals the number of atoms of the product side.

J. The number of atoms on the reactant side is double the number of atoms on the product side.

The statement H is the correct one: The number of atoms on the reactant side equals the number of atoms on the product side.            

Explanation:

The law of conservation of mass states that mass can not be created or destroyed, just can be transformed. The mass of a system can not be added or removed, thereby the transfer of mass in a reaction must remain constant.  

This implies that the mass of the molecules on the side of the reactants before the reaction must be equal to the mass of the atoms on the side of the products after the reaction.

Therefore, the statement H is the correct one: The number of atoms on the reactant side equals the number of atoms on the product side.                  

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