8) Myoglobin is a protein with a molar mass approximately 17,000 Daltons. Data from ultracentrifugation experiments gave the s20ww at 2.041013 svedburge. Its diffusivity, D20,w was at 11.3107cm2/s. If the frictional factor ( f ) of Myoglobin in water is 2.5106g/s, estimate its molecular volume. (density of water =1g/cm3 at 20C ) 9) Molecular structure of poloxamer, a medical surfactant, is shown below. Estimate its HLB if a =5 and b=5