Air...Sometimes Have Abit Of Oxygen In..But Most Of The Time Just Normal Air.
Anything pressurised with gas - an auto tire for example, or a scuba diver's air tank.
Scuba divers require increased air pressures in their air tanks while diving because the pressure on their bodies increases.
By faaakinj your mom
Scuba masks do not contain oxygen. Instead, scuba divers rely on a separate piece of equipment called a tank or cylinder to supply compressed air or a breathing gas mixture for underwater breathing. The scuba mask's purpose is to provide a clear field of vision and to create an airspace for the diver's eyes and nose while underwater.
The gas bubbles exhaled by a SCUBA diver are always spherical for two reasons: the gas molecules are pushing outward from the bubble in all directions with the same amount of force. In addition, the water outside the gas bubble is squeezing the bubble inward in all directions with the same amount of force.
Not necessarily. It just depends on what someone means. Scuba diving is only when you use a scuba tank or cylinder that a diver carries. Deep commercial divers will often get their breathing gas supplied to them through a long umbilical hose ... so they are attached and do not carry Self Contained equipment that they can swim with like a SCUBA (self contained underwater breathing apparatus) diver.
When a scuba diver descends into deeper waters, the pressure increases, causing the volume of air in their scuba tank to decrease according to Boyle's law. This is because as pressure increases, the volume of a gas decreases proportionally, illustrating Boyle's law in action.
The pressure will increase
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
Nitrogen in a diving tank is in a gas state. When compressed into the tank, it remains in a gaseous form until it is released and breathed in by a diver.
The deepest scuba dive by a U.S. Navy diver was achieved by Lieutenant Don Walsh and Jacques Piccard in 1960 when they descended to the bottom of the Mariana Trench in the bathyscaphe Trieste. However, for pure scuba diving, the record is held by U.S. Navy diver Scott Carpenter, who reached a depth of 1,000 feet (304.8 meters) in 1969. This dive was performed using a specialized mixed gas and advanced diving equipment.
It seems that sugar in a gas tank has no effect whatsoever on a car engine. This myth was tested in Episode 15, "Scuba Diver, Car Capers" on the show Mythbusters (Discovery channel, Wed @9pm), along with other engine myths such as destroying an engine by adding bleach to the gas tank. http://dsc.discovery.com/fansites/mythbusters/episode/00to49/episode-07.html