1. The following are approximate o (in dyn/cm ) versus y data for three different samples of polyisoprene in tetradecane solutions of approximately the same concentration:" Mw (g/mol) 1.61 x 106 1.95 x 106 1.45 x 106 Linear Four-armed star Six-armed star c (g/cm ) 0.0742 0.0773 0.0078 7 ( s - 1 ) o x 10-3 o x 10-3 0 x 10-3 0.6 0.7 0.8 0.9 0.3 0.6 0.15 JOUANY 8850AN- 0.3 0.4 ONAWN- 0.8 AN 100 From plots of these data, estimate the Newtonian viscosity of each of the solutions and the approximate rate of shear at which non-Newtonian behavior sets in. Are these two quantities better correlated with the molecular weight of the polymer or the molecular weight of the arms