If biodegradable organic matter, oxygen as well as microorganisms are placed in a closed bottle, the microorganisms will utilize the oxygen in the process of oxidizing the organic matter. The bottle may be treated as a batch reactor no inflows or outflows, as well as the decay of oxygen may be treated as a first order reaction. Compute and then plot the concentration of oxygen each day for a period of five days starting with a concentration of 8 mg/L. Utilize a rate constant of 0.35 d-1.