Two concentric cylindrical tubes placed inside each other are used as thin film reactor. The liquid climbing up between the two cylinders (annulus) flows down as a thin film from the inner walls of the inner tube and reacts at their interface with the gas flowing from the center of the inner tube (Fig. Q1.1). a) If fluid flowing in the annulus is linear alkyl benzene (LAB), its density and viscosity are 837.6 kg m-3 and 3 cP, in turn. Average velocity in the annulus is 0.8 ms-1, calculate the volumetric and mass flow rates of LAB. [2 pts] Fig. Q1.1 Outer tube: 1 inch Sch 40 stainless steel (1.315 inch/0.133 inch) Inner tube: inch Sch 40 stainless steel (0.840 inch/0.109 inch) b) At the inlet of the inner pipe reaction takes place and the fluid film formed at the inner surface of the inner pipe is consisting of 96% linear alkyl benzene sulfonic acid (LABSA) and 4% LAB by mol percentage. Density and viscosity of LABSA in this system are 1047.4 kg m-3 and 220 cP, respectively. Molecular weight of LA