N2O4(g)2NO2(g) Kc = 0.513 at 500 K .

If a reaction vessel initially contains an N2O4 concentration of 0.0450 M at 500 K , what are the equilibrium concentrations of N2O4 and NO2 at 500 K ? Express your answers in moles per liter to three significant figures separated by a comma.

please show all work. did fine creating the ice table but i believe i made a mistake when using the FOIL method and the algebra