The air supply to a fermenter was turned off for a short period of time and then restarted. A value for C of 7.3mg/L has been determined for the operating conditions and the measurements of dissolved oxygen (DO) are shown in Table 1. (a) Express the equations of oxygen uptake rate (OUR) and volumetric mass-transfer coefficient (kLa). [6 Marks] [CO3, PO1,C2] (b) Determine the OUR and kLa in this system. [14 Marks] [CO2, PO1,C3]