a A closed tube with length 0.30 meters contains a mixture of CO2 and N2 at 298 K and a constant total pressure of 101320 Pa. The partial pressure of CO2 is 70795 Pa at one end of the tube and 10132 Pa at the other end. The diffusion coefficient of CO2 in N2 is 1.67 x 10-5 m/sec at 298 K. Calculate the molar flux of CO2 in SI units, assuming equimolar counter-diffusion between the CO2 and N2 gases