he equation for a reaction is 4NO2(g) + 2H2O(g)  + O2(g) → 4HNO3(g). Which one of the following is NOT numerically equal to the others?   Select one: a. - (∆[H2O]) / (∆t) b. ½ (∆[NO2]) / (∆t) c. ½ (∆[HNO3]) / (∆t) d. -½ (∆[O2]) / (∆t)

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