1. Molecular shape of polymers For a linear polymer molecule, the total chain length L depends on the bond length between chain atoms d, the total number of C-C bonds in the molecule N, and the angle between adjacent backbone chain atoms 0, as follows: L = Nd sin(0/2) The average end-to-end distance for a series of polymer molecules ris equal to r=dy N If linear polytetrafluoroethylene has a number-average molecular weight of 500,000 g/mol, compute average values of L and r for this material