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What is the effluent concentration of a reactive contaminant exiting a completely mixed flow reactor after...

What is the effluent concentration of a reactive contaminant exiting a completely mixed flow reactor after 8 hours of operation? Assume that after this length of time, the reactor is at steady state. The volume of the reactor is 100 L and the volumetric flow rate is 50 L/hr. The influent concentration of the contaminant is 80 mg/L and the rate constant for the decay of the contaminant is 0.5 hr-1.

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