compressing an ideal gas

[devesh9749]

hello everyone,
since i am a crazy engineer so i had this crazy doubt that,

If we have an insulted container having a gas like say helium(which is close to ideal gas) and has a piston on top.
Now if we put a weight on the piston and allow the gas to be compressed to some volume will the gas get cooled?

can anyone please can tell whether my reasoning is correct or wrong?

[devesh9749]

someone please reply...

[Jeanius]

If you're looking at an ideal gas, then you're working with (phonetically) pivnert (PV=nRT).

Both n and R would remain constant throughout the push, so we really need to focus on the PV and T portions. What you'd really have to work out is the ratio between P and V in any specific case, as pressure will increase and volume will decrease. Think of a liquid oxygen tank expelling gas. The nozzle freezes as pressure decreases, right?