Two bulbs are connected by a straight tube, 0.001m in diameter and 0.15m in length. Initially the bulb at End 1 contains N2 and the bulb at End 2 contains H2. Pressure and temperature are constant at 25C and 1 atm. At a time after diffusion starts, the nitrogen content of the gas at End 1 and End 2 of the tube became 80mol% and 25mol%, respectively. If the binary diffusion coefficient is 0.784cm2/s and the gas constant =82.06 atm.cm3/mol.K, determine: i. The rates and direction of mass transfer in mol/s. ii. The species velocities, in cm/s, at the point (z=0.1m) where the molar percentages of N2 and H2 are 43.3% and 56.7, respectively. iii. The molar average velocity at the point (z=0.1m)