Vertebrate and Number of Breaths - Ideal Gases

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To determine the number of breaths a warm-blooded vertebrate takes per day, the problem involves calculating the lung volume at the given temperature and pressure using the ideal gas law (PV = nRT). The air intake is specified as 250 L/day at standard temperature and pressure (STP), while the lung conditions are at 43 degrees C and 440 mm Hg. The calculation requires converting the lung conditions to find the equivalent volume of air at STP or vice versa. After determining the lung volume, dividing this by the average volume per breath (100 cm³) will yield the total number of breaths per day. Understanding the significance of temperature and pressure in this context is crucial for accurate calculations.
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Homework Statement



The volume of air taken in by warmblooeded vertebrate is 250 L/day at standard temperatutre and pressure (0 Degrees C and 1 atm). If air in lungs is at 43 degrees C under pressure of 440 mm HG and we assume vertebrate takes in average volume of 100cm cubed per breath at the termperature and pressure of the lungs, how many breaths does this vertebrate take per day?

Homework Equations


PV = nRT
P1V1=P2V2


The Attempt at a Solution

Calculate V2 using P2V1=P2V2 and then divide V2 by 100 cm cubed. But then why did they give me the temp and pressure inside of the lungs?
 
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The amount of air needed is given at STP - but the volume of the lungs are at a different T,P so you need to work out either how much air is needed at lung T,P or the lung volume at STP
 

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