SIXTEEN kg of AIR and TWO kg of HELIUM GAS are sealed in a rigid and insulated internal-piston-cylinder device. Initially the helium is at 800 K, the air is at 300 K and both gases are at rest at a pressure of 100 kPa. The rigid piston moves freely (without friction) and conducts heat from the hot gas to the cold gas. The mass and energy of the piston material are negligible. Use the gas data @ 300 K from the class equation sheet. Complete a property table for the AIR & HELIUM GAS. Determine the pressure and temperature when the gases finally reach equilibrium.