The following mechanism has been proposed for the reaction between nitrogen monoxide and oxygen in the gas phase.

Step 1: 2NO⇋N2O2 (fast)
Step 2: N2O2+O2→2NO2 (slow)

a. What is the equation for the overall reaction?
b. What is the formula of the species that acts as a reaction intermediate?
c. Complete the rate law for the overall reaction that is consistent with this mechanism.