There are two molecules with the formula C3H6 . Propene, CH3CH = CH2 , is the monomer of the polymer

There are two molecules with the formula C3H6 . Propene,
CH3CH = CH2 , is the monomer of the polymer polypropylene, which is used for
indoor-outdoor carpets. Cyclopropane is used as an anesthetic:

When heated to 499 °C, cyclopropane rearranges (isomerizes)
and forms propene with a rate constant of 5.95 × 10_4 s _1. What is
the half-life of this reaction? What fraction of the cyclopropane remains after
0.75 h at 499 °C?