Question 1(25pts) : The table below has values obtained from the fractionization of a sample of polystyrene through fractional precipitation to generate samples of different mass and molecular weight. Use this data to answer the following questions. a) Draw the repeat unit of the polymer and define the molecular weight of the repeat unit. b) What are Nn,Nw,Mn,Mw,Mz, and ? c) Plot the relative abundance (mole fraction) of each molecular weight to give the polymer distribution. Label the location of Mn and Mw on the plot. What is the peak molecular weight (Mp) of this polymer sample? d) Discuss the relationship of Mn,Mp, and to the shape of the distribution