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. A Nucleopore membrane is characterised with permporometry using cyclohexane as condensable vapour. At a relative pressure of 0.78 a high oxygen flux can be observed which does not increase further upon decreasing the relative vapour pressure. The t-layer of cyclohexane in the pore is 0.5 nm. The experiment is performed at 34°C. The saturation pressure of cyclohexane at 34°C is 192.5 mbar. a) Calculate the vapour pressure of cyclohexane at a relative pressure of 0.78. b) What can you say about the pore size distribution in this membrane? c) What is/are the pore radius/radii in this membrane