Air flows over a solid slab of frozen carbon dioxide (dry ice) with an exposed cross-sectional Surface area of . The carbon dioxide sublimes into the flowing stream at a total release rate of 2.29 mol/s. The air is at 293 K and 1.013 Pa pressure. At that temperature, the diffusivity of carbon dioxide in air is 1.5 and the kinematic viscosity of the air is 1.55. Determine the value of the mass-transfer coefficient of subliming into the flowing air under the conditions of the experiment.