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P. 4209. As an average we take breath 18 times in every minutes, and approximately 500 cm3 is inhaled in each breath. The O2 content of the inhaled air is 21%, and that of the exhaled air is 16%. The temperature of the air in the lungs is the same as the body temperature.

How many grams of O2 is consumed in a day?

(4 points)

Deadline expired on 11 January 2010.

Google Translation (Sorry, the solution is published in Hungarian only.)

Megoldás. Kb. 820 g.

Statistics on problem P. 4209.
 186 students sent a solution. 4 points: 107 students. 3 points: 27 students. 2 points: 26 students. 1 point: 18 students. 0 point: 7 students. Unfair, not evaluated: 1 solution.

• Problems in Physics of KöMaL, December 2009

•  Támogatóink: Morgan Stanley