HELP i got it wrong and it said this The decomposition ni N2O5 ran be described

Question

HELP i got it wrong and it said this

The decomposition ni N2O5 ran be described by the equation 2N2O5 rightarrow 4NO2(soln) + O2(g) Given this data for the reaction at 45degreeC in carbon tetrachloride solution, calculate the average rate of reaction tor each successive time interval. Interval: 0s to165 s 165 s to 456 s 456 S to 735 S Reaction rate: Incorrect. You've found the rates of disappearance of [N2O5]. Use the stoichiometry of the reaction to relate your answers to the reaction rate. rate = -1/2 Delta [N2O5]/Delta t

Explanation / Answer

r = - 1/2 X n205/ T, 0 to 165, r = 0.5 X(1.76-1.59 )/165 = 5.151515151515152e-4, 165 to 456, r= 0.5* (1.59-1.32) / 291 = 4.639175257731959e-4, 456 to 735, r= 0.5 *(1.32-1.11)/279 = 3.763440860215054e-4

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