Two tanks are connected by a tube, 5 mm in diameter and 0.5 m long. One tank contains nitrogen and one tank contains CO2 . The pressure and temperature are maintained at 200 kPa and 25 ⁰C. The diffusivity is 0.08 cm2/s. At some initial time, t=0, diffusion occurs between two tanks. After a while, the mole fraction of the nitrogen reaches 0.7 on one end and 0.25 at the other end. Determine a) The rates and direction of mass transfer of CO2 and nitrogen b) The velocities of each compound c) The molar average velocities of the mix