i am an intern in a company looking to find the solution to a problem. I have an experimental setup with a 150cm3 can of chemical precursor with a evacuated pressure of 0.01 Torr We are introducing N2 from a 20 psi line with a stop valve for a duration of 20ms. The question is what is the pressure in the bottle after 20ms of N2 introduction? I am not too sure what the approach is. I tried to do a simple PV = nRT but it does not get me anywhere. Any help would be well appreciated.