<h2>a) The rate at which 
is formed is 0.066 M/s</h2><h2>b) The rate at which molecular oxygen 
is reacting is 0.033 M/s</h2>
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.
Rate in terms of disappearance of =
= 0.066 M/s
Rate in terms of disappearance of =
Rate in terms of appearance of =
1. The rate of formation of
2. The rate of disappearance of
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