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Length of time it take a person to breathe 1 mole of air?
How long does it take a person at rest to breathe one mole of air if the person breathes 80.0 mL/s of air that is measured at 25 C and 755 mmHg?
Extra Credit problems.. i would like to see how you got your answer..
2 Answers
- ?Lv 710 years agoFavorite Answer
1 mole occupies 22,400mL at 0°C and 760mmHg.
V2P2/T2 = V1P1/T1
T1 = 0 + 273 = 273K
T2 = 25 + 273 = 298K
V2=V1P1T2/P2T1 = 22400mL x (760mmHg/755mmHg) x (298K/273K) = 24613mL
24613mL x (1s / 80mL) = 308s = 5.13min.
- 10 years ago
find the volume
PV=nRT (watch the units)
convert L to mL
set up a proportion
1s/ 80.0 mL = x s/ the volume from PV=nRT in mL
