A well-insulated chamber is divided in two parts my a thin membrane. The left side, with a volume of 2000 cm^3, is filled with air at 27 degrees Celsius and 100 kPa. The right side, with volume 3000 cm^3, is initially evacuated. The membrane ruptures and air expands freely into the evacuated section to fill the chamber. Calculate the entropy generated in the process, in kJ/K. Use the first law and the second law in your analysis, and assume constant specific heat).