Methyl methacrylate (MW = 100 g/mol, 1.5 M in benzene) is polymerized using AIBN (0.02 M in benzene) as an initiator at 85 °C. The initial observed rate of polymerization at steady state is 1.5 x 10-5 M.s-1 . The thermal initiation of AIBN under similar conditions proceeds to afford active radical species with a measured fkd of 1.9 x 10-6 What is the Mn of the expected polymer, assuming steady-state and no recombination?