An initiator decomposes in a solvent with the first-order kinetics and half-life is 23 minutes. The propagation and termination rate constants of the system at the same temperature are 2104dm3mol1s1 and 4107dm3mol1s1, respectively. a) What is the undecomposed concentration of initiator in 80 minutes later if the initial concentration of initiator is 2.0103mol.dm3. b) What percentage of the monomer remains without consumed in 80 minutes