A

B

R

C

There are no intermediates

If we know that a reaction is an elementary reaction, then we know its rate law.

The rate-determining step of a reaction is the rate of the slowest elementary step of its mechanism

Since intermediate compounds can be formed, the chemical equations for the elementary reaction in a multistep mechanism do not always have to add to give the chemical equation of the overall process.

In a reaction mechanism an intermediate is identical to an activated complex

All of the above

Step 1 is limiting because the NO2 is a reactant.

Step 2 is limiting because the fast step determines how quickly the reaction can occur.

Step 1 is limiting because the reaction can not go faster than its slowest step.

Step 2 is limiting because the NO3 intermediate has to be formed before the reaction can occur.

Not enough information

Exothermic

Endothermic