It is necessary to estimate how rapidly a piece of equipment can be evacuated. The equipment, which is 0.7 m³ in volume, initially contains carbon dioxide at 340 K and 1 bar pressure. The equipment will be evacuated by connecting it to a reciprocating constantdisplacement vacuum pump that will pump out 0.14 m³/min of gas at any conditions. At the conditions here carbon dioxide can be considered to be an ideal gas with C^∗_P = 39 J/(mol K).

a. What will be the temperature and pressure of the carbon dioxide inside the tank after 5 minutes of pumping if there is no exchange of heat between the gas and the process equipment? 

b. The gas exiting the pump is always at 1 bar pressure, and the pump operates in a reversible adiabatic manner. Compute the temperature of the gas exiting the pump after 5 minutes of operation.