You would like to polymerize methyl methacrylate (density = 0.94 g/cm3 ) into poly(methyl methacrylate) (PMMA) by RAFT polymerization with a RAFT agent (dithioester) to obtain a narrow-distribution molecular weight. 2,2- Azobis(2-cyanopropane) is used as the initiator (kd = 4 x 10-6 /s). The aimed number-average molecular weight of RAFT-mediated polymer is 150,000 g/mol. If the monomer conversion rate is 80%, what is the initial concentration of the dithioester she should use (in M)? If the initial initiator concentration is 0.4 mM, the disproportionation termination factor, q = 0.2 and the efficiency of the initiator, f = 0.6, how long the polymerization time should be if she hopes to produce at least 1% of the fraction of non-active polymer.