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\cdot \mathrm{min} The PBR diameter is 10 cm and the feed consists only of A and B. The initial pressure is 10 atm, temperature is 500 K, porosity is 0.35, catalyst solid density is 2.35 kg/L, and Bo is 1 atm/m. The molar feed flow rate for both A and B is 5 mol/min. a) What is the mass of the catalyst in the PBR if the conversion of A is 37%? b) What is the length of the PBR?

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