The sedimentation coefficient of a sample of human hemoglobin in water is equal to 4.48 svedberg at 20°C, and its density is 1.335 g mL^{−1}, The density of water at this temperature is equal to 0.998 g mL^{−1}. Use the value of the diffusion coefficient from Example 10.16 to determine the molar mass of hemoglobin.