Water at 40C and 1 atm containing hydrochloride acid (HCl) flows at a velocity of 5.37 m/s inside a pipe. The inside diameter of the pipe is 30 mm. The diffusivity for water-HCl system at 40C is 0.941 x 10-9 m2/s and concentration of HCl in bulk water stream is negligibly small. Calculate the mass transfer coefficient, kc for the system.