Question 9 An uncapped marker dries out by drying off the solvent from the felt tip. In this problem, you will estimate the drying rate by calculating the flux of isopropanol (solvent) through the felt. Some important information: Solve using fickss law - 2mL isopropanol in the reservoir - 0.7cm long, 0.2cm diameter tip with impermeable sheathe around it (no radial flux) - Diffusivity of isopropanol in felt is DAB=6106cm2/s a) What is the flux of isopropanol passing through the tip (NA[=]mol/scm2) ? Note: sstary with writing the expression out symbolically, then reduce it. b) What is the rate of isopropanol evaporating (WA[=]mol/s) ? c) How long before the marker goes completely dry (t[=]s) ? d) Sketch the concentration profile for 0