Depends on how much pressure is left in the tank.Duration of Flow = Oxygen Tank Conversion Factor * Remaining Tank Pressure (psi) / Continuous Flow Rate (L/min).Conversion factor for D Tank = 0.16Assuming you have a full tank 350 liters at 4000 psi flowing 5L/minDuration = (.16*4000)/5 = 12.8 minutes
Depending on the flow rate. A G tank holds 5,300 liters of Oxygen. so just divide that buy the rate you are setting it to flow at. A non-rebreather at 15 lpm should last you close to 6 hrs. normally though the tank should be refilled before it gets down to around 200 psi, just to be safe.
Although well insulated, the tank will gradually warm and as it does so the liquid Nitrogen will boil off (the gas is allowed to escape from the tank which is not sealed and pressurized). This happens gradually, so the liquid Nitrogen can be stored for as long as some remains in the tank (this will depend on the size of the tank (Dewer - see link below)).
Gold last for a long time because it is durable. Gold jewelry will last for a long time when it is made purely of gold.
Deuterium is a stable isotope of hydrogen and will likely last as long as the rest of the universe.
depends on if you're using a NITROX mix or a HELIOX mix.
About 120psi for a 16 oz propane tank
It lasts until it is empty. Depends on what fuel mileage you get and how largw the fuel tank is.
If made properly over 1,000 years
About 18 miles!
The propane will last until the tank is empty.
The combination of helium and oxygen, known as heliox, reduces the density of the delivered gas, and has been shown to reduce the effort of breathing and improve ventilation when an airway obstruction is present.
That depends on how much water is drawn from the tank and how often it is drawn.
probably 2 days
50,000 miles or permanently if it is a permanent filter in the tank.
No way of telling w/o knowing the pressure in the tank at the start and the flow rate.
It depends on the tank size. the average 20 oz is about 800 shots.