Kinetics of a fermentation culture on limited glucose has been determined by batch cultures that the maximum specific growth rate of cell growth is 0.2 h-1, and the glucose concentration is 28.6 mg/L when the specific growth rate reaches 0.1 h-1. For continuous production by this process with a 5L CSTR, 1) Design the liquid flow rate and the hydraulic retention time to ensure that the residual glucose concentration flowing out of the reactor is lower than 100 mg/L during steady state; 2) What is the cell concentration under this steady state given yield coefficient YX/S is 0.5g/g and initial glucose concentration is 500 mg/L?

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.