4. When glycerol is used as the carbon source in a chemostat, P. aeruginosa has a mass doubling time of 2.4h. The use of glycerol as the substrate results in a saturation constant of 1.3g/L, and YX/S is 0.46g cell/g glucerol. The concentration of glycerol in the feed stream is 38g/L glycerol. Assuming Monod kinetics, calculate the following values: a. Maximum dilution rate b. Cell concentration when the dilution rate is one-half of the maximum c. Substrate concentration when the dilution rate is 0.8Dmax d. Cell productivity at 0.8Dmax