The MSDS for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. It reacts with bases, various metals, and strong oxidizing agents. Its vapors can form explosive mixtures with air.

Based on this information, which statement is applicable to glacial acetic acid?
It should be heated to remove moisture and stored on a lab shelf.
It should be handled on a clean, dry area of the lab bench.
It should be stored in an iron container, away from open flames.
It should be handled in a fume hood, away from open flames.

It should be handled in a fume hood, away from open flames.

Explanation:

The vapors can form explosive mixtures with air, so it should only be handled in a fume hood.  It should not be stored in an iron container because it reacts with metal.

It should be handled in a fume hood, away from open flames.

Explanation: This is because you don't want it, flames. combusting with a flammable liquid, and mixing with air to conform into a sub atomic mini bomb.

3. dark matter

empty space could also be a simple vacuum

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j