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Chapter 8: Q. 8.61 (page 279)

Whitney's lung capacity was measured as 3.2Lat a body temperature of 37掳Cand a pressure of 745mmHg. What is her lung capacity, in liters, at STP?

Short Answer

Expert verified

Whitney's lung capacity at STP is2.8L.

Step by step solution

01

Given Information

We need to find Whitney's lung capacity at STP.

02

Simplify

Now,

STP conditions mean:

  • Standard temperature is exactly 0掳C(273K)
  • Standard pressure id exactly 1atm(760mmHg)

Combined gas law :

P1脳V1T1=P2脳V2T2

Consider:

initial pressureP1=745mmHg

final pressureP1=760mmHg

initial volumeV1=3.2L

initial temperatureT1=37掳C=(37+273)K=310K

final temperature T2=0掳C=(0+273)K=273K

Now, finding the final volume V2:

P1脳V1T1=P2脳V2T2

V2=P1脳V1T1脳T2P2V2=745mmHg脳3.2L310K脳273K760mmHgV2=650832L235600V2=2.8L

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