The isomerization of cyclopropane to form propene is a first-order reaction. 
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?
A) 3.4 × 10-2 min
B) 2.5 min
C) 23 min
D) 29 min
E) 230 min
Correct Answer:
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