Which occurs when the forward and reverse reactions occur at the same rate? the system is conserved. the reactants and products are equal. the system is in equilibrium. the changes are physical.

When the forward and reverse reaction rates are occuring at the same rate, the system is at equilibrium

THE SYSTEM IS IN EQUILIBRIUM.
A system is said to be in equilibrium when the rate of the forward reaction is equal to the rate of the reverse reaction. In this state there is no net change in the reaction system.

500bc indiais the answer.

The answer to this problem is. 67