Scuba Diving Gear

Scuba Tank Air Pressure

As a scuba diver descends under water, the pressure increases.?

At a total air pressure of 2.91 atm and a temperature of 25.0 C, what is the solubility of N2 in a diver's blood? [Use the value of the Henry's law constant K calculated in Part A, 6.26x10^-4 mol/(L*atm)
Assume that the composition of the air in the tank is the same as on land and that all of the dissolved nitrogen remains in the blood.

Solubility=----------mol/L

2.91 atm @ 78% nitrogen = 2.27 atm N2

2.27 atm N2 @ 6.26x10^-4 mol/(L*atm) =6.26x10^-4 mol/(L*atm)
your answer
0.00142 molar N2

Leisure Pro Scuba Tank, K Valve, 80 cu ft, Aluminum, 3000 psi $299.99 Scuba tank K valve 80 cu ft Aluminum 3000 psi maximum pressure Shipped empty Yellow exterior color

Scuba tank adapter $83.94 "Scuba Yoke" Fill Station

AirForce Scuba Tank Adapter K-valve, Steel Hose $102.6 AirForce Airguns scuba tank adapter K-valve Pressure gauge goes up to 3,000 psi Stainless steel mesh hose* Ends in a female quick-disconnect *While the hose is stainless steel mesh, it MAY also have a black plastic cover. Which one you get depends on what we have in stock.

AirForce Scuba Tank Adapter, DIN Connector, Steel Hose $102.6 AirForce Airguns scuba tank adapter DIN connector Pressure gauge goes up to 3,000 psi Stainless steel mesh hose* Ends in a female quick-disconnect *While the hose is stainless steel mesh, it MAY also have a black plastic cover. Which one you get depends on what we have in stock.

Kingman Scuba Charging Set $93.54 Scuba tank adapter, black hose. Probe is NOT included. Fits scuba tanks with a K valve.

Leisure Pro Scuba Tank Accessory Kit $47.99 Accessory kit for Leisure Pro 80 cu ft scuba tank Includes black tank boot, yellow tank cover & yellow K-valve protector

AirForce Scuba Refill Clamp with Gauge $78.6 Scuba yoke fill station 1/4" AirForce tank adapter Fits scuba tank with standard k-valve 1" diameter micro-gauge reads from 1-5,000 psi across one-third of the gauge face Product may not look exactly like the one shown. Universal! Fits long- & short-necked scuba tanks!

Air Arms MPR Air Tank, Built-in Gauge $171.52 MPR air tank Built-in air pressure gauge (manometer)

HaleStorm Extra Air Tank $107.99 Don't carry a scuba tank or pump when you go hunting or plinking! Carry an extra tank that you filled up at home! It's lighter than fill devices and will let you keep shooting instead of filling. Fits the Air Venturi HaleStorm.

AirForce CO2 Adapter with Filled 12-oz. CO2 tank, fits Condor, Talon & Talon SS $143.94 Includes CO2 adapter & filled 12-oz. CO2 tank Fits AirForce Condor, Talon & Talon SS guns Over 1,000 shots per CO2 tank Ideal for shooting indoors Easy to switch back to air No handpump or scuba tank required Quieter operation Ground shipping only How to switch from high-pressure air to CO2: Unscrew your AirForce air tank from your rifle Screw in your CO2 adapter into your rifle Screw in the filled tank into the other end of the adapter Start shooting! When this tank is empty or down to a low level, fill up with more CO2 from a larger bulk-fill tank. This filled tank can be sent only by ground...no air shipping allowed!

AirForce CO2 Adapter with Filled 20-oz. CO2 Tank, Fits Condor, Talon & Talon SS $151.19 Includes CO2 adapter & filled 20-oz. CO2 tank Fits AirForce Condor, Talon & Talon SS guns Over 1,000 shots per CO2 tank Ideal for shooting indoors Easy to switch back to air No handpump or scuba tank required Quieter operation Ground shipping only How to switch from high-pressure air to CO2: Unscrew your AirForce air tank from your rifle Screw in your CO2 adapter into your rifle Screw in the filled tank into the other end of the adapter Start shooting! Since this tank is filled with CO2, it has to be shipped via ground service. Start shooting when this arrives, and refill it from a bulk-fill CO2 tank.

Hammerli Pneuma Extra Air Tank $151.19 Don't carry a scuba tank or pump when you go hunting or plinking! Carry an extra tank that you filled up at home! It's lighter than fill devices and will let you keep shooting instead of filling. Fits the Hammerli Pneuma.

AirForce CO2 Adapter, Fits Condor, Talon & Talon SS $119.94 Fits all Condor, Talon and Talon SS rifles Over 1,000 shots per CO2 tank Ideal for shooting indoors Easy to switch back to air No handpump or scuba tank required Quieter operation How to switch from high-pressure air to CO2: Unscrew your AirForce air tank from your rifle Screw in the CO2 adapter into your rifle Screw in the filled tank into the other end of the adapter Start shooting!

Air Venturi Tank Adapter Assembly, 4500 psi, for High-Pressure SCBA Tanks $105 Tank adapter assembly Fits high-pressure scba (self-contained breathing apparatus) tank, including the Air Venturi carbon fiber tank 4500 psi Includes bleeder, hose and female quick-disconnect coupling Does not include a manometer (air pressure gauge) Fits the Air Venturi carbon fiber tank--AV-4500HPT [PY-A-350]. Inline manometer (air pressure gauge) sold separately--AV-00031 [PY-A-3865]. Suitable for connecting your high-pressure scba tank to a precharged pneumatic air rifle.

Air Venturi Inline Air Pressure Gauge, 0 to 4500 psi $55.19 Inline air pressure gauge Measures up to 4500 psi Female quick-disconnect Male fitting If you use high-pressure fill devices for your precharged pneumatic guns and don't have a pressure gauge on your fill device, this will do the job. The inline air pressure gauge fits the Air Venturi carbon fiber tank, AV-4500HPT.

AireTex 45 Gasoline Air Compressor, Max 4500 PSI, Incl. Scuba Yoke & 300 DIN Hose $4314 The compressor may not look exactly like the one shown here. AireTex 45 gasoline air compressor 4500 PSI max working pressure 3-stage, 3-cylinder compressor Stainless steel valves Low-speed operation Stainless steel intercoolers & after-cooler Dual-stage water separator Purifier meets or exceeds CGA G7.1 Grade E and NFPA 1500 standards Mechanical separator removes particles, oil mist & water droplets Suitable for breathing air Purifier chamber rated for 5000 PSI operation Activated carbon removes tastes & odors Catalyst converts carbon monoxide to carbon dioxide Motor overload shutdown Hour meter 15,000 cu. ft. filtration system Includes standard scuba yoke & 300 DIN filler hose AireTex compressors are as durable and reliable as they are portable. This gasoline compressor gives you max 4500 PSI at less than 10 degrees above ambient room temperature! It takes about 23 minutes to fill an 80 cu ft air bottle. Use only for filling scuba tanks and other high-volume devices. Do not connect directly to an airgun reservoir, as it will fill too fast and heat up. When filling air bottles, do not leave the compressor unattended!

AirForce Spin-Loc Air Tank, Fits TalonP Air Pistols $188.1 Spin-Loc air tank Connects to an AirForce TalonP pistol without having to remove the tank from the gun Built-in manometer (air pressure gauge) Uses standard quick-disconnect fittings 6.125" long Can be used only with compressed air or dry nitrogen gas Does not fit older models of guns unless they have been retrofitted* to accept the new tank The Spin-Loc air tank makes it much easier for you to refill your tank since you won't have to remove it from your gun. Plus, switching to commonly used quick-disconnect fittings simplifies the whole process. The onboard pressure gauge lets you monitor how much air is left in the tank. No more guessing! *To retrofit your gun to accept the Spin-Loc standard tank, send it to AirForce Airguns.

AireTex 45 Electric Air Compressor, Max 4500 PSI, Incl. Scuba Yoke & 300 DIN Hose $4074 AireTex 45 electric air compressor 4500 PSI max working pressure 3-stage, 3-cylinder compressor Stainless steel valves Low-speed operation Stainless steel intercoolers & after-cooler Dual-stage water separator Purifier meets or exceeds CGA G7.1 Grade E and NFPA 1500 standards Mechanical separator removes particles, oil mist & water droplets Suitable for breathing air Purifier chamber rated for 5000 PSI operation Activated carbon removes tastes & odors Catalyst converts carbon monoxide to carbon dioxide Motor overload shutdown Hour meter 15,000 cu. ft. filtration system Requires 220V electrical outlet Includes standard scuba yoke & 300 DIN filler hose The AireTex 45 electric compressor is a top-rated machine that easily fills up scuba tanks and large carbon fiber tanks. The purifier is rated for 50 hours of run time. The compressor outputs 4.20 cubic feet per minute. It runs at 1100 RPM and has over 50 feet of stainless cooling coils. It takes about 23 minutes to fill an 80 cu ft air bottle. Use only for filling scuba tanks and other high-volume devices. Do not connect directly to an airgun, as it fills too fast and heats up. When filling air bottles, do not leave the compressor unattended!

Benjamin Air Tank, 2000 psi Output $191.99 Benjamin air tank Designed for high-pressure air up to 3000 psi Regulated to 2000 psi output (specifically for the Benjamin Discovery & Marauder and the Crosman Challenger) 72 cubic inches Fills a 2000 psi rifle 6 to 8 times from one tankful To fill the Discovery, Marauder or Challenger, you'll also need FAH002 (Dual Fuel adapter) Do not use this tank with paintball guns Includes male quick-disconnect coupling (can be filled with the Benjamin hand pump) 4.5" outside dia., 11.5" long, 4.40 lbs.

Air Venturi Thread Converter + Hose $29.99 Hose + adapter for AirForce Airguns scuba tank & hand pump One end has 1/4 BSPP male threads to fit the female threads of the AirForce scuba tank adapter or AirForce hand pump The other end has 1/8 BSPP female threads & fits the hose with 1/8 BSPP male threads Hose ends in 1/8 BSPP female thread for use with 1/8 BSPP filling adapters or our female quick-disconnect coupling Includes flexible hose & 2 O-rings (wide rubber O-ring is used with AirForce 3-stage hand pump; bonded metal O-ring is used with AirForce scuba tank adapter)

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Scuba videogame test video 01

Suppose a tank has enough airto last 60 min at the surface. How long will it last at a depth of 99ft?

(The pressure is 4 atm, or 4 times as great.)
A scuba diver continues to breathe normally while descending. Every time the diver inhales, the tank delivers enough air to inflate the diver's lungs. This means that the amount of air delivered by the tank must increase with the depth in order to withstand the increasing pressure. At greater depths, the diver uses the air in the tank more quickly. The amount of time the air will last is inversely proportional to the pressure at the depth of dive.

I also have to make a table showing how long the air will last at 0ft, 20 ft, 33ft, 40 ft, 50 ft, 66 ft and 99ft.

15 minutes! The diver will need 4x the amount of air to take a breath at 90 ft.