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The reaction 2 NO1g2 + O21g2¡2 NO21g2 is second
order in NO and first order in O2. When 3NO4 = 0.040 M,
and 3O24 = 0.035 M, the observed rate of disappearance
of NO is 9.3 * 10-5 M>s. (c) What are the units of the rate constant?