pls help with all three

The presence of a catalyst provides a mechanism with a activation energy and thus causes a reaction rate. higher, higher lower, steady higher, lower lower, higher lower, lower NO(g)+NO(g)N2O2(g)(slow)N2O2(g)+O2(g)2NO2(g)(fast) Which of the following gives the experimental rate law according to this mechanism? first-order in NO and second-order in O2 fisst-order in NO and zero-order in O2 Second-onder in NO and cero-order in O2 Second-order in NO and first-order in O2 A certain reaction has an activation energy of 33.2kJ/mol. The rate constant of this reaction is measured to as 0.029s1 at 400K temperature. Calculate the rate constant in the units of s1 when temperature is raised to 450K. ln(k2k1)=REa(T21T11) R=8.314mol.KJ 0.24 0.089 rate constant does not change with temperature 0.029 0.014