The conversion of cyclopropane to propene in the gas phase is a first-order reaction with a rate constant of 6.7 x 10-4 s-¹ at 500°C. (a) (b) (c) CH, CH₂ CH₂ cyclopropane CH3-CH=CH₂2 propene If the initial concentration of cyclopropane was 0.25 M, what is the concentration after 8.8 min? How long (in minutes) will it take for the concentration of cyclopropane to decrease from 0.25 M to 0.15 M? How long (in minutes) will it take to convert 74 percent of the starting material? 1

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