A student performs the reaction of 2-ethyl-1,3-pentadiene with HBr at –55∘C and obtains the following mixture of products: 78% compound A and 22% compound B. She repeats the reaction the next day, and this time obtains the approximately reverse ratio of products: 26% compound A and 74% compound B. Puzzled, she reviews the procedure and realizes that she forgot to regulate the reaction temperature and that the reaction instead proceeded at room temperature (25∘C). Determine the structures of compounds A and B and elucidate the role of temperature in the reaction.

i think   the answer is c hope i'm right

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them  

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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