Answer:
Production of liquid oxygen from air Oxygen is generated by liquefaction of atmospheric air in the air separation unit (ASU). Cryogenic technique is the most commonly used for producing liquid oxygen for industrial and medical applications .
Explanation:
it helps us with our blood (Little)
There are 9 orbitals in the third energy level and 25 orbitals in the fifth energy level.
I hope this helps you.
I I'm pretty sure it's B I hope this helps
