Pitanje iz fizikeBack in class we had the following problem:
The air we breathe is about 21% oxygen, by volume. Exhaled air contains about 14% of oxygen. The absorption of oxygen within the lungs takes place in tiny spherical compartments called alveoli which have a diameter of the order of 0.1 mm. Estimate the number of oxygen molecules absorbed in one breath in each of the alveoli. (Assume that body temperature is 37°C.)
I assumed that the pressure inside the alveoli is 1 atm, that
and calculated the volume using 
Now,
and End-of-chapter solution is 
What am I doing wrong?
Dakle, u čemu je problem?
