Given the following system consisting of a chemical in water, where mass transfer is occurring across an interface as depicted below: Interfac Boundary Layer L-2 m C-60 mg/L C-2 mg/L (a) If the mass transfer coefficient is 0.05 cm/s, calculate the flux. Make sure to indicate the direction of the flux (i.e., towards the interface or away from the interface). (b) Assuming the thin film theory of mass transfer is valid here, what is the diffusion coefficient of this species?