utadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2C4H6(g) --> C8H12(g) The following data were collected for this reaction: Time (min) [C4H6] (M) 0 0.36 15 0.30 30 0.25 48 0.19 75 0.13 Determine the order of the reaction and the rate constant.