For each of the following stirred tank reactions, carry out the following analysis.

a. Write an initial value problem for the mass of the substance.b. Solve the initial value problem and graph the solution to be sure that

are correct.

A one-million-liter pond is contaminated and has a concentration of 20 g/L of a chemical pollutant. The source of the pollutant is removed and pure water is allowed to flow into the pond at a rate of 1200 L/hr. Assuming that the pond is thoroughly mixed and drained at a rate of 1200 L/hr, how long does it take to reduce the concentration of the solution in the pond to 10% of the initial value?

Transcribed Image Text:

m(0) and lim m(t) 1 →∞