1- Imagine that the carbon backbone of polypropylene of molecular weight 1,350,000 g/mole is in the "planar zig-zag" conformation (see the figure of this conformation below). Given that the carbon-carbon bond angle is 109.5, and the bond angle is 0.154 nm, develop a formula to compute the length of the polypropylene molecule. Use the formula to compute the fully extended length in units of nanometers. H H H R H H : H H 1 1 H R H R