this is different from the similar one that was already posted so don't copy and paste

A 2 L jar, equipped with a tight-fitting lid that contains a rubber septum, is half filled with water. At equilibrium, the air space has a volume of 1 L, a total pressure of 1 atm and a temperature of 298 K. Then 1 mg of formaldehyde (HCHO, MW = 30 g/mol) is injected through the septum into the water. Some of the formaldehyde escapes into the gas phase. Consider the situation when a new equilibrium is established. The equilibrium for this reaction is: HCHO (aq) HCHO (g) K= 3.27x10-7atm-m /mol Determine (a) the value of AGfor the gaseous species given the free energy of the aqueous species at 25C of -90 kJ/mol. (b) the value of the equilibrium constant when the units for HCHO (aq) and HCHO (g) are mol/Lwater and mol/Lgas, respectively. (c) the equilibrium mass concentration of HCHO in water (mg/L) (d) the equilibrium mole fraction of HCHO in air