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wannabero
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Homework Statement
one mole of an ideal gas takes up 0.0225m3 at 0 degrees celsius and 1.01x10(5) pascals. (calculated)
hence, calculate the volume of 1 mole of air (ideal) at an altitude of 15km above sea level.
average molecular mass of air = 29 amu.
T @ altitude of 15km = 0 degrees C.
Homework Equations
I used pv=nrt for the first part.
another equation i can find is
M = m N A
where M is the mass of the mole in kg, m is the atomic mass unit in kg, N is the atomic mass, and A is avogadros constant.
The Attempt at a Solution
volume of a mole of air can be calculated using pv=nrt, rearranged for v which is v=nrt/p.
however, i have no idea how to bring the altitude into it!
thanks for help!
Edit: Perhaps equation P = P0 exp (-mgy/k(b) t)?
where m = average molecular mass in kg, g = acceleration due to gravity, y = altitude in m, kb is boltzmanns constant and t is temperature?
but I'm not sure where to find volume.
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