Why does the scientific establishment sometimes reject new ideas? a. new ideas may contradict existing, accepted ideas. b. new ideas may have come about too quickly, which makes them invalid. c. new ideas cannot be accepted if the scientist had a lucky day in the lab. d. new ideas cannot be accepted if the experiments are not conducted in a lab setting.

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.