Hi people. I need some assistance for a problem that is beyond me. If I have a container that measures one cubic foot, and I fill it to 100 PSI, how many cubic feet of air is it holding? I'm not a student and you're not doing my homework for me, this is for an air tank I am building and I don't know the math. Thanks in advance for any assistance you can offer. If this is the wrong place to ask this question, please accept my apologies.