(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known dataA meteorological baloon had a radius of 1 m when released from sea level and expanded to a radius of 3 m when it had risen to it's maximum altitude, where the temperature was -20.0C. What is the pressure inside the ballon at that altitude?

2. Relevant equationsPV = nRT (I assumed ideal behavior)

n & R are constant, so

P1V1/T1 = P2V2/T2

3. The attempt at a solution

known:

initial volume= 4/3pi (1m)^3=4.187 m^3

final temp = 253K

final volume = 4/3 pi (3)^3=113.04 m^3

Can I assume STP at sea level and use 1 atm for initial pressure and 273K for initial temperature? Or is there more to it than that?

If I do that I get .03 atm. This sounds reasonable, but I am not sure the assumtions I made are correct.

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Gas law problem

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