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### expansion

Posted: Sat Mar 14, 2020 6:33 pm
how can you tell if there is expansion?

### Re: expansion

Posted: Sat Mar 14, 2020 6:38 pm
Expansion will usually lead to an increase in volume (because the internal pressure is greater than the external pressure); likewise, compression will lead to a decrease in volume (because external pressure is greater than the internal pressure)

### Re: expansion

Posted: Sat Mar 14, 2020 7:39 pm
it is also important to know the difference between gradual expansion and sudden expansion, in which you would apply the appropriate formula. The questions I have seen typically state whether the process is occurring gradually or suddenly. Hope this helps!

### Re: expansion

Posted: Sat Mar 14, 2020 11:05 pm
CMaduno_1L wrote:it is also important to know the difference between gradual expansion and sudden expansion, in which you would apply the appropriate formula. The questions I have seen typically state whether the process is occurring gradually or suddenly. Hope this helps!

Sorry, could you explain what the appropriate formula for each case would be?

### Re: expansion

Posted: Sat Mar 14, 2020 11:09 pm
Reversible expansion means that the expansion is gradual, while irreversible expansion means that the expansion is instantaneous.

### Re: expansion

Posted: Sun Mar 15, 2020 7:43 am
Expansion can be determined if work is done by the system at a constant pressure, so we find that the system expanded against the external pressure.