(5) what is a requirement for storing chemicals?
a. chemical containers should be clearly labeled
b. chemicals should be stored where they will be used
c. mixed chemicals should be stored in an unmarked, clean water
d. used for spilled chemicals should be stored in the original container

I would choose A

Explanation:

this is because B- not all chemicals should be kept out in the open, ready to use at any time. This can not only be unorganized but also dangerous

C- never leave an unmarked container

D- never add a substance to a chemical and then put it back in the original container

answer; i do believe the correct answer is (25) times faster;