Question 2: (5 Marks) The Pyrex glass tube is used to separate Helium (He) from other components of gas mixture. The partial pressures of Helium at the inner and outer surface of the Pyrex tube are 1.5(pai) and 1.0(PA) bar, respectively. The system is under steady state conditions. The wall thickness of Pyrex tubing is 3 mm. r. Nar (In ro) = (DAB/RT) (pai - Pao) Using above equation determine the flux of Helium through a tube of 1.0 cm inside diameter (Da = 4.49 x 1015 m/s) AB