2 cm sada de MEK x=0 x= 2,0 m 2) In a manufacturing process, an organic 30 cm3/s de MEK lquido solvent (methyl ethyl ketone, MEK) is filme polimrico used to dissolve a thin coating of a (inicialmente com 0,2 mm de espessura) polymer away from a flat, non-porous surface 2.0 m long and 10 cm wide. The 1 polymer film thickness is initially uniform at 0.2 mm. In the present process, a volumetric flow rate of 30 cm 3 /s of MEK solvent flows over the open flat plate. You can assume that the concentration of the polymer dissolved in the solvent is essentially zero, that is, CA = 0, although in reality the concentration of the polymer dissolved in the solvent increases very slightly as it flows over the pan. At process temperature and pressure, the following data area is available: Diffusion coefficient of dissolved polymer (solute) in MEK solvent, 3x10-6 cm 2 /s. Kinematic viscosity of the MEK liquid, 6.2x10 -3 cm 2 /s. Density of solid polymer film material, 1.1 g/cm 3 . MEK liquid density, 0.80 g/cm 3 . Maximum solubility of polymer dissolved in MEK solvent = 0.04 g/cm 3 . Determine: a) The average mass flow at the surface. b) The convective mass transfer coefficient at 40 cm downstream from the leading edge. c) Compare the values in item a) and item b), and discuss them