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RingNebula57
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Homework Statement
In a spherical chamber with volume V , which contains a gas with pressure p1, there is a surface that has a much more low temperature than the other surface temperature of the sphere surface( which is kept constant). Because of that the particles that hit the coresponding surface S will condensate on it. We know: molar mass, universal gas constant, and neglate the liquid formation from condensation.
After how much time will the gas have another pressure, let's call it p2?
Homework Equations
at solution
The Attempt at a Solution
The number of molecules that hit the cold surface in a time interval dt is:
dN = n * dV , where dV= v * dt * S, v= root mean square velocity ; n= molcule volumetric concentration ( m^-3)
For that dt we can keep n constant so : n=N/V => dN/N= v* dt* S / V, and here is my problem...
I can't integrate this because I would say that the intitial number of molecules is 0. Any ideas?
Thank you[/B]