You are culturing yeast cells in the bioreactor. At the stationary phase, the cell concentration is approximately 20g/L. The specific oxygen uptake rate of the cells follows a monod-like relationship with dissolve oxygen concentration: qO2=L0.2mg+CLqO2maxCL Where qO2max=240mgO2/ ( g of cell h) and ka=120/ hour. What is the dissolved oxygen concentration (CL) at the stationary phase? (you can assume steady-state oxygen transport/consumption and solubility in water is C=28mg/L )