(2). The intrinsic viscosity of polymer solution follows the Mark-Houwink-Sakurada relation: []=KM. For polystyrene (PS) in tetrahydrofuran, KPS=3.71102ml/g and PS=0.64. For poly(methyl methacrylate) (PMMA) in tetrahydrofuran, KPMMA=4.18103ml/g and PMMA=0.83 (a). What is the hydrodynamic volume, Vh, of monodisperse PS and PMMA with a molecular weight of 500,000g/mol ? (2') (b). A size exclusion chromatography (SEC) has been calibrated with eight different PS standards for various molecular weights from 10,000g/mol to 2,000,000g/mol, and find out a relationship between the hydrodynamic size (Vh) and the elution volume (VR(mL)) following: log(2.5NAVh)=201.55VR+0.063VR20.001VR3. Monodisperse PS and PMMA (both are unknown molecular weight) have the same elution volume of VR=27mL. (i) Could you please help identify the molecular weight of the PS and PMMA? (2') (ii) Do the PS and PMMA have the same molecular weight and why? (1')