Ixer Power to Achieve Complete Mixing It is desired to precipitate a protein in a solution with a density of 1.02 g/cm3 and kinematic viscosity of 0.012 cm2/s. The diffusion coefficient of the protein has been estimated to be 1.2 × 10−7 cm2/s. You need to select a mixer for this precipitation. To aid in this selection, plot as a straight line the dependence of the mixer power per solution volume (kW/liter) as a function of the time (s) to completely mix the solution for mixing times up to 100 s.