At a certain temperature the rate of this reaction is second order in N₂O5 with a rate constant of 19.6M¯¹.s¯¹: 2N₂O5 (g) → 2N₂O4 (g) + O₂(g) Suppose a vessel contains N₂O5 at a concentration of 0.980 M. Calculate the concentration of N₂O5 in the vessel 0.690 seconds later. You may assume no other reaction is important. Round your answer to 2 significant digits. 0 X

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A: Answer: c.   r = k[A]x [B]y  r1 = k [0.66]x [1.23]y  r2 = k [4.01]x [1.23]y   r2r1 = k [0.66]x…

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