One reaction that destroys O3 molecules in the stratosphere is NO + O3  NO2 + O2

Question

When this reaction was studied in the laboratory, it was found to be first order with respect to both NO and O3 with a rate constant of 1.9 x 104 mol L-1S-1. If [NO] = 1.2 x 10-5 mol L-1 and [O3] = 2.0 x 10-5mol L-1, what is the rate of this reaction?

Answer 1

I got it!!!
the answer is 4.6x10^-6

Answer 2

good work