The following osmotic pressure data have been obtained for two monodisperse samples of polyisobutylene. All experiments have been conducted at 30C in cyclohexane. Sample A: Unknown Mn and []=0.638cm3/g Sample B: Mn=71000g/mol a) Calculate the number average molecular weight of sample A. b) Calculate the values of the Mark-Houwink parameters (K and a ) for PIB and cyclohexane at 30C. c) Two blends have been prepared from samples A and B, and the following data have been collected. Calculate the missing data in the table below