Thanks tankFan86 for your reply. Experimentally and intuitively, you're right, but I can't see how the theory supports it. Do you know what I might look for to research this further?
Thanks again.
I'm trying to determine the internal volume of a container using the ideal gas law principle.
1. A container of known volume is pressurized with air to some known value relative to ambient.
2. The container of unknown volume is vented to ambient.
3. Temperature is constant for all air...