2. An experiment was performed in the lab to calculate the rate, r'as (mol/m.s) by varying the velocity, U and particle size, dp. The data obtained from the experiment is plotted below. (15) -r' vs (U/dp)^0.5 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 1 2 3 4 a) Calculate Das given Cab = 1 mol/L, v=0.5*10* m/s. Assume the units of U and dp is m/s and m respectively. b) If we want to perform the experiment only in the mass transfer limited regime, how will you change the parameters in the experiment