The diffusion coefficient of lactose in water at 288 K is 3.8x10-6 cm2.s-1, and the viscosity of water at the same temperature is 0.0011 N.s.m-2. From these data, estimate the effective radius of a lactose molecule. 4.0 The surface tension of quinoline is twice that of acetone at 20.C. If the capillary rise is 3.1 cm for quinoline, what is the rise for acetone in the same capillary? Assume that the angles of contact are zero. The densities of quinoline and acetone at 20.C are 1.09 g.cm-3 and 0.79 g.cm-3, respectively