Given that the molecular weight of a polystyrene (PS) repeating unit is 104 and the the carbon-carbon distance is 1.54 , calculate the following: (a) The mean-square end-to-end distance for a PS molecule of 1 million molecular weight assuming that the molecule behaves as a freely rotating, freely jointed, volumeless chain. Assume that each link is equivalent to a single repeating unit of PS. 1/2 (b) The unperturbed root-mean-square end-to-end distance, (r),", given the relationship for intrinsic viscosity, [7], of PS in a O solvent at 35C as [n]=8x10 M5 ovige inidnib ni bawarom o where [n] is in units of dL g. (c) The characteristic ratio, CN, for PS.