A student claims that the given chemical reaction will conserve mass. Na2SO4 + BaCl2 BaSO4 + 2NaCl
Which evidence supports the claim?
O The same elements are present in the reactants and products.
O The number of atoms of each type of element is the same on both sides of the reaction.
O The number of compounds of reactants and products is the same on both sides of the reaction.
O The chemical reaction can occur in reverse direction after the products are formed.