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The Air Around Us Has 78% Nitrogen and 21% Oxygen

Question 4

Multiple Choice

The air around us has 78% nitrogen and 21% oxygen.If the pressure is 1 atm,the pressure due to oxygen is

A) 0.21 atm
B) 0.78 atm
C) 1 atm
D) 0.5 atm
E) 0.67 atm

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