A carbon dioxide gas is flowing through a pipe at a pressure of 3 MPa and a temperature of 500 K with a molar flow rate of 0.4 mol/s. a) Calculate the volumetric flow rate, mass flow rate, and density of carbon dioxide in this initial state. b) If the carbon dioxide is cooled at constant pressure so that its temperature at the exit of the pipe is 450 K, calculate the volumetric flow rate at the pipe outlet.