Ethanol is diffusing through a 4-mm stagnant film of water. the ethanol concentrations at the entrance and the existing planes are maintained at 0.1 and 0.02 mol/m3, respectively. if the water film temperature is kept constant at 283 k determine the steady-state molar flux of the ethanol and the concentration profile as a function of the position z within the liquid film. compare these results with a 4-mm stagnant film of air at 283 k and 1 atm at the same entrance and exit ethanol concentrations.

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

Achemist at a pharmaceutical company is measuring equilibrium constants for reactions in which drug candidate molecules bind to a protein involved in cancer. the drug molecules bind the protein in a 1: 1 ratio to form a drug-protein complex. the protein concentration in aqueous solution at 25 ˚c is 1.74 x10-6 m . drug a is introduced into the protein solution at an initial concentration of 2.00 x10-6m. drug b is introduced into a separate, identical protein solution at an initial concentration of 2.00 x10-6m. at equilibrium, the drug a-protein solution has an a-protein complex concentration of 1.00 x10-6m, and the drug b solution has a b-protein complex concentration of 1.40 x10-6m.a. calculate the kc value for the a-protein binding reaction.b. calculate the kc value for the b-protein binding reaction.c. assuming that the drug that binds more strongly will be more effective, which drug is the better choice for further research?