All the energy released from the reaction $$X \rightarrow Y, \triangle_r G^0 = - 193 kJ mol^{-1}$$ is used for oxidizing $$M^+$$ as $$M^+ \rightarrow M^{3+} + 2e^-, E^0 = -0.25 V$$ Under standard conditions, the number of moles of $$M^+$$ oxidized when one mole of X is converted to Y is [F = 96500 C $$mol^{-1}$$]