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Catstranaughts

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- Homework Statement:
- Find Volume of gasline: I have known pressure chamber (vacuum) that P= 1e-6 Torr. Volume is 101L. T = 25C. I can easily solve for n. But now I have a gasline with an unknown volume which I'm trying to calculate. I know the pressure of the gasline. but I also don't know the number of molecules in the gas line.

- Relevant Equations:
- PV =nRT

Please refer to diagram. V1 is open initially then V2 is open for 5 minutes for pressure to equalize. V1 and V2 are then shut. V3 is opened. What is Vol 2 ? P(final)*V(final) = n(final)* R*T => (Vol1 + Vol2) = n(final)*R*25C/ 0.070 Torr where n(final) = n(Vol1) + n(Vol2)

If I shut V3, I can find the n(Vol 1), but i still don's know n(gasline) so I can't find Vol 2. Is there enough information given to solve this problem ?

If I shut V3, I can find the n(Vol 1), but i still don's know n(gasline) so I can't find Vol 2. Is there enough information given to solve this problem ?