(c) A partial oxidation is carried out by passing air with 1.2 mole % hydrocarbon through 40 mm tubes packed with 2 m of 3 mm by 3 mm cylindrical catalyst pellets. The air enters at 350 C and 2 atm with a superficial gas velocity of 1 m/s. (i) what is the pressure drop through the packed tubes? (ii) How much would the pressure drop be reduced by using 4 mm pellets? Assumptions: = 0.4, 5 of fluid is 3 10-5 Pa.s and standard molar volume is 22.4 m/mol. [12] & = 1, the hydrocarbon raises the molecular weight of air to 30, viscosity