for the reaction N2O4 (g) <=> 2 NO2 (g) a 0.750 L flask contains an equilibrium mixture of 0.971 mol N2O4 and 0.0580 mol NO2 at 25 C. The system is allowed to expand into a larger flask with a total volume of 3.0 L. What is the composition of the gaseous mixture in moles when equilibrium is reestablished for the system in the larger vessel?