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QUESTION 2 In an air-carbon dioxide mixture at 301 K and 232 kPa, the concentration of CO2 at two planes 5 mm apart are 13 vol.% and 32 vol.%. The diffusivity of CO2 in air at 301 K and 232 kPa is 8.2*10-6 m (s. Calculate the diffusion flux of CO2 across the two planes in moles/(m2.min), assuming equimolecular counter diffusion