Carbon dioxide gas (CO2) enters a pipe at a pressure of 3.5 MPa and a temperature of 450 K at a mass flow rate of 2 kg/sec. This gas flow is cooled at a constant pressure until its temperature drops to 400 K at the exit of the pipe. Determine the volume flow rate of the gas and its density at the inlet of the pipe and the volume flow rate of the gas and its density at the exit of the pipe using: a) The ideal gas equation of state b) The generalized compressibility charts