The data below show the concentration of cyclobutane (C4H8) versus time for the following reaction: C4H8→2C2H4 Time (s) [C4H8] (M) 0 1.000 10 0.894 20 0.799 30 0.714 40 0.638 50 0.571 60 0.510 70 0.456 80 0.408 90 0.364 100 0.326 What is the rate of reaction when [C4H8]= 0.26 M ? Express your answer using two significant figures.

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