Calculate the excluded volume in terms of the molecular volume on the basis that the molecules are spheres of radius a. Evaluate the osmotic virial coefficient in the case of bushy stunt virus, a = 14.0 mm, and hemoglobin, a = 3.2nm (see Problem 19.18). Evaluate the percentage deviation of the Rayleigh ratios of 1.00 g/ (100 mm') solutions of bushy stunt virus (M = 1.07 x 104 kg mol-1) and hemoglobin (M = 66.5 kg mol") from the ideal solution values. In eqn 19.8, let Pe = 1 and assume that both solutions have the same K value.