Asked by Sha
In a sedimentation experiment using a centrifuge rotating at 20,000 rpm at 25°C the position of the boundary between the settled phase and the supernatant for a protein was found to be at 6.153 cm at t = 300 s, 6.179 at 600 s, and 6.206 at 900 s. If D for the protein is 7.62 × 10–11 m2s–1 at 20°C and it has a density of 1.373 g cm–3, what is its molecular weight?