At a deep-sea station 200. m below the surface of the Pacific Ocean, workers live in a highly pressurized environment. How much gas at STP must be compressed on the surface to fill the underwater environment with 2 × 107 L of gas at 22 atm? Assume that temperature remains constant.

Question

At a deep-sea station 200. m below the surface of the Pacific Ocean, workers live in a highly pressurized environment. How much gas at STP must be compressed on the surface to fill the underwater environment with 2 × 107 L of gas at 22 atm? Assume that temperature remains constant. 
Answer in units of L.

I understand that this is a typical P1V1=P2V2, however, I seem to be putting in all the wrong numbers because every time I get an answer it turns out to be wrong. Can someone please explain in better detail of what I am suppose to do?

Thanks in advance!

DrBob222 · Answer

What numbers are you using? Show your work and let me see if I can spot the error. Does this question have anything to do with radioactivity?