4 At high temperatures nitrogen dioxide NO2 decomposes into NO and O2 If y t is the concentration of NO2 in moles per liter then at 600 K y t changes according to the reaction law 05y for time t in seconds A Express y in terms of t and the initial concentration y B Assuming that the concentration of NO is twice as high at t 20 seconds as it is at 100 seconds find the exact initial concentration of the NO Reminder Exact means no