The permeability coefficient of a type of small gas molecule in a polymer is dependent on absolute temperature accordingto the following equation: q»pu - pu.°m(-fi)where pm and op are constants for a given gaspolymer pair. consider the diffusion of water through a polystyrene sheet30 mm thiclc the water vapor pressures at the two faces are 20 kpa and 1 kpa, which are maintained constant. computethe diffusion flux [in(cm3 stp)/cm2°s] at 350 k? for this diffusion system, p", = 9.0 x 10-3 (cm3 stp)(cm)/cm2-s-paq, = 42.300 j/molassume a condition of steady-state diffusion.