136. Solving a chemistry problem

4. The activation energy of the second-order reaction proceeding at a temperature of 627K 2NO2 = 2NO O2 is equal to 111.2 kJ/mol. The pre-exponential factor of the reaction rate constant is 3.36109 dm3 /(mols). The initial concentration of NO2 is 0.09 mol/dm3. Determine the half-life for this reaction.