4. X and Y form an ideal solution at 298 K, with x = 0.550, px = 0.1 atm, and py*= 0.06 atm. (a) Calculate the partial pressures of X and Y in the gas phase. (5 marks) (b) The gas phase (treat X and Y both as ideal gases) is collected and condensed in a separate container. Calculate the partial pressures of X and Y in equilibrium with this condensed liquid sample at 298 K. (5 marks) Hint: For an ideal gas, the mole fraction is given by the fraction of its partial pressure to the total pressure