Question

scuba divers breathe from tanks of compressed air during times of extended swimming.
Part 1: what volume of air at 0.98 atm can be compressed into an 11.1 L scuba tank if the tank is pressurized to 204 atm?
Part 2: If the partial pressure of oxygen in a scuba air tank is 73.44 atm, the partial pressure of nitrogen is 128.52 atm and the partial pressure of other gases is at 2.04 atm, what is the percent composition of the air mixture in the scuba air tank?
I tried this question by myself and spent quite a long time trying to solve it, but got no where. Please help! Thanks in advance!

Answer 1

Underwater diving - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Underwater_diving
Wikipedia
Occasionally divers may dive in liquids other than water. .... Improvements made to it over time, extended his underwater exposure time to over 4 hours. .... enough to allow compressed air to be stored in containers at sufficiently high pressures. .... The ability to dive and swim underwater while holding one's breath can be a ...
Scuba diving - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Scuba_diving
Wikipedia
Scuba diving is a form of underwater diving in which a diver uses a ... scuba divers carry their own source of breathing gas, usually compressed air, ... to a breathing bag, with (estimated) 50-60% O2 supplied from a copper tank and CO2 ..... These different gas mixtures may be used to extend bottom time, reduce inert gas ...
Technical diving - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Technical_diving
Wikipedia
Technical divers preparing for a mixed-gas decompression dive in Bohol, Philippines. ... and wing setup with sidemounted decompression cylinders stage tanks containing EAN50 ... limits – especially depth and bottom time – of recreational diving. ... the use of special gas mixtures (other than compressed air) for breathing.

Answer 2

I saw this but it doesn't answer any of my questions. I need to use some kind of formulas and equations for this question, not information about scuba diving. Thanks though.

Answer 3

Use the formula: \(\sf \color{red}{P_1V_1 = P_2V_2}\) for the first one. You're already given most of the information. If you remember from algebra, just rearrange it around to solve for P\(_1\).

Answer 4

Sorry, V\(_1\), not P\(_1\)

Answer 5

Percent composition is simply the sum of what you have, divided by the total multiplied by 100.

Answer 6

Thank you so much! You've been a huge help!!