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:
Answer: Phosphorous Cycle
salt water 97%
fresh water 1%
frozen 2%
a weak base
pH levels:
0-3 Strong Acid
4-6 Weak Acid
7 Neutral
8-10 Weak Base
11-14 Strong Base
