Somerization of 1-hexene to 2-hexene occurred in a laboratory reactor over rhodium particles supported on alumina at 150°c and atmospheric pressure. the reaction was a first- order in 1-hexene with a rate constant of 0.15 s'. find the largest pellet size that can be used in an industrial reactor to achieve 75% of the maximum rate. additional data: pore radius of the alumina : 10 nm molecular diffusivity : 0.050 cm's! tortuosity : 4 porosity : 0.5

d. temperate deciduous forest

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

the answer is c

tell me if wrong