3.7 Dinitrogen tetroxide (N2O4) decomposes to nitrogen dioxide (NO2) in the gas phase at 350K and 5 bar: N2O4(g)2NO2(g) At 350K the equilibrium constant is K=3.9525. Base the analysis below on starting with 1molN2O4. (a) Write the complete set of equations you would solve to determine the mole fractions, just assume they are known and write them in the equations. No algebra or arithmetic required. (b) For each vapor pressure and/or activity coefficient and/or fugacity coefficient that you used in the equations written for part (a), explain where (what equations or tables or charts?) or how (what experiments?) you would obtain them. (c) Suppose the system pressure is reduced to 1 bar and the temperature remains constant at 350 K. Explain how your approach in part (a) for calculating the mole fractions, y y204 and y yN22, at 2 equilibrium would change