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In recreational diving, most divers use compressed air (as in the normal air we breather at the surface). Some divers are also trained to use special gas mixes called Nitrox which have a higher oxygen content and lower Nitrogen.

Professional (or commerical) divers tend to use more advance mixes such as Heliox or Trimix which combine Oxygen, Nitrogen and Helium.

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2011-03-13 22:43:22
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Q: What gas is inside the scuba divers tank?
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How would the pressure inside a scuba tank filled with gas change if the tank were heated?

The pressure will increase


Why does a scuba diver need increased gas in the air tank?

Scuba divers require increased air pressures in their air tanks while diving because the pressure on their bodies increases.


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Can you store cng in a scuba tank?

the silly answer is you can store anything in a scuba tank that you can get in it!!. BUTthe serious answer is scuba tank were designed for compressed air and nothing else... using a scuba tank for natural gas is like driving around with a bomb in your car!!, the valves and collars of the bottles are not strong enough if there was a crash


How do scuba divers alter their average density to float?

Divers usually increase their density by wearing a weight belt (which contains lead weights). Some divers also rely, to a lesser degree, on using steel tanks, which are more dense than aluminum tanks. To decrease their density, divers put air into a Bouyancy Control Device (BCD). Some divers may also control bouyancy by putting air into a drysuit if they wear one. Whereas the increase in density created by the weightbelt is normally fixed, the positive bouyancy provided by the BCD can be varied throughout the dive. Usually a divers net density will decrease over the dive - a diver with a full scuba tank has about 4.5 lbs of extra weight (the weight of the gas) over a diver with an empty scuba tank.


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Anything pressurised with gas - an auto tire for example, or a scuba diver's air tank.


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