In a second order reaction,  2 NO 2(g)  --> 2 NO  (g) + O 2(g)     Initial concentration of NO 2 is 0.7650 M and the rate constant was experimentally determined to be 0.5411 M -1· s -1 at 25.00 ̊C.   Identify the concentration of NO 2 after 2 secs.

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