3)
Ordinary Air from the atmosphere contains about 21% Oxygen whereas the
proportion of oxygen in the mixture released by boiling river is 30%. The best
explanation of the increase in percentage of Oxygen is that?
A)Oxygen is more soluble in water than nitrogen
B)Carbon dioxide is more soluble in water than oxygen
C)Nitrogen reacts with water
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Answer:
A) oxygen is more soluble in water than nitrogen
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