4) As discussed in class, the van der Waals equaton is the most simple equation of state that predicts a critical point for a gas. Other gas laws also predict the existence of a critical point. Consider a gas that obeys the following equation of state p=VmRTVm2B+Vm3C Using eq 4.1 and the conditions for a critical point (Op/Vm)T=0 (3p/Vm2)r=0 find expressions for pe,Vm,e, and Tc, the critical pressure, molar volume, and temperature for a gas whose equation of state is given by eq 4.1 Give your final answers in terms of B, C, and/or other constants