What would be the most likely explanation if none of the tested paint samples had turned brown? O
The reaction was not actually caused by UV light.
o
The reaction only happens in real sunlight, not artificial.
о
The paint behaves differently on a canvas than it does in a laboratory
O
None of the tested mixtures matched the chemical composition of Van Gogh's paint.

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!

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.