6. A feedstream having a flowrate, Fin(t), contains a chemical compound, A, is sent to a mixing tank. The concentration of A does not influence the density of the fluid. Also, the process is operating at steady-state. Fin(t) Cin(t) V(t) X C(t) a) Derive the model describing the outlet concentration leaving the tank. Fout(t) C(t) At steady-state, the volume is 5 ft, the flowrate is 1 ft/min and the compound A concentration is 1.25 lbmol/ft to 1.75 lbmol/ft b) Determine the equation representing the outlet concentration as a function of time. c) Calculate the tank concentration at ten minutes.