The isomerization of cyclopropane to form propene is a first-order reaction. H2C CH2 H3C-CH=CH2 CH2 At 760 K, 15% of a sample of cyclopropane changes to propene in 6.8 min. What is the half-life of cyclopropane at 760 K? 230 min 23 min 3.4 x 10-2 min 2.5 min 29 min

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