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Air enters in the lungs in a tiny cavity...

Air enters in the lungs in a tiny cavity called alveoli. Oxygen diffuses into our blood from alveoli. The average radius of alveoli is 0.005 cm and air inside it contains 21% `O_(2)` and 79% `N_(2)`. Assuming that the pressure in the aveoli is 1 atm at body temperature of `37^(@)C`.
Volume of single alveoli is :

A

`5.23 xx 10^(-7) cm^(3)`

B

`5.23 xx 10^(-9) cm^(3)`

C

`5.23 xx 10^(-6) cm^(3)`

D

`5.23 xx 10^(-8) cm^(3)`

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The correct Answer is:
A
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