What is the total pressure on a diver at 99 feet below the surface how many units?

What is the expected pressure of air in lungs of a diver at 4 meters below the sea level?

Air pressure (at sea level) is about 1 bar; every 10 meters below the water surface, pressure increases by about 1 bar - that gives a total of 1 + 0.4 = 1.4 bar. (1 bar is about 1 atmosphere.)

What partial pressure of oxygen is a scuba diver breathing if the total pressure is 6.3 ATM and 20 percent of the air is oxygen?

The partial pressure of oxygen can be calculated by multiplying the percentage of oxygen in the air by the total pressure. In this case, 20 percent of 6.3 ATM is 1.26 ATM. Therefore, the scuba diver is breathing oxygen at a partial pressure of 1.26 ATM.

About What fraction of atmospheric pressure greatest at the surface of earth?

At the surface of the Earth, about 99% of the atmosphere's total mass is located below 32 km. This is where most of the atmospheric pressure is concentrated. Therefore, the greatest fraction of atmospheric pressure is present at the Earth's surface.

If there is a total of one liter of nitrogen gas dissolved in the body tissue at sea level how much would be dissolved in a diver breathing air at 99 feet below the sea a?

4 litres. 99 Feet is approx 30 mts. For every 10 mtrs you are 1 atmosphere pressure than the surface so you are at 4 times the surface. So 4 litres.

Industrial deep-sea divers must breathe a mixture of helium and oxygen to prevent a disorienting condition known as nitrogen narcosis If a diver's tank is filled with a helium-oxygen mixture to a pre?

If a diver's tank is filled with a helium-oxygen mixture to a specific pressure at the surface, the same pressure will be maintained at depth to prevent nitrogen narcosis. This is because helium is less narcotic than nitrogen, allowing the diver to breathe at higher pressures without experiencing detrimental effects. The specific mixture and pressure are carefully calculated to ensure the safety and well-being of the diver during deep-sea operations.

How much preasser is gravity?

The pressure of gravity on a surface is(total force of gravity on the surface) divided by (area of the surface)

Does the evaporation in the evaporation column influence the total pressure?

evaporation as such influence on the total pressure. evaporation occurs when the total pressure is greater than the surface molecules vapour pressure. as the rate of evaporation increases , more vapour will be there at the top, and then the new total pressure will become the sum of the earlier total pressure and vapour pressure of the vapour evaporated. hence total pressure increases.............

Total surface area of a cylinder?

1500 sq in of surface R-22 at120F tons of pressure

How will pressure of an object will change if its area is doubled?

It won't. The pressure within a hollow object may change if the surface area changes, hence the volume. The total pressure acting on the exterior of a solid object may change if the total surface area changes.

How will the pressure of an object change if area is doubled?

It won't. The pressure within a hollow object may change if the surface area changes, hence the volume. The total pressure acting on the exterior of a solid object may change if the total surface area changes.

Why is air that is pressurized needed in scuba diving?

The pressure on a diver's body increases quickly with depth. At the surface we're all breathing air at 14.7 PSIg, or 1 "Atmosphere" (atm). Each 33 feet of sea water results in another 1 atm of pressure. This means, for example, that a diver's body is under a total pressure of 3 atmospheres at 66 feet of sea water (one of air, two of water). The human respiratory system is designed to operate at normal atmospheric pressure of 14.7 pounds per square inch. If we descend to 33 feet, the water pressure exerts a force of nearly 30 pounds per square inch on our bodies. Our bodies are incapable of breathing against that much pressure. A scuba pressure regulator is designed to deliver air at the same pressure as the surrounding water, allowing us to breathe.

At what depth is oxygen toxicity harmful to a scuba diver?

The quick answer is that a diver breathing air should descend no deeper than about 218 feet of seawater due to concerns of oxygen toxcity. Here's the longer answer: Oxygen can become toxic to a diver as the partial pressure of the gas increases with increasing depth. The point at which this occurs varies based on the metabolism of the individual diver and time at depth. A general rule of thumb is 1.6 atm PPO2. The NOAA Diving Manual quotes the following maximum times at various oxygen partial pressures: 1.6 45 minutes 1.5 120 minutes 1.4 150 minutes 1.3 180 minutes 1.2 210 minutes It is important to understand that these are not fixed limits. An individual diver's reaction to high pressures of oxygen varies greatly. Most mixed gas rebreathers are set to maintain 1.2 to 1.4 PPO2, allowing for this variability. To understand what this means to a diver in terms of maximum depth, we need to understand how depth affects the partial pressure of oxygen. The partial pressure of any gas is the total pressure the gas is under, times the fractional percentage of the gas. Each foot of seawater increases the total pressure of the breathing gas by .030303 atm. This means that the total pressure at 33 feet is 2 atm (1 at the surface plus one of water). Total pressure at 66 feet is 2 atm, 99 feet is 3 atm, and so on. Since air is about 21% oxygen, the PPO2 of air is .21 at the surface, where the total pressure is 1 atm. At a depth of 33 feet of seawater, the total pressure is 2 atm, making the PPO2 (2 X .21) or .42. Accordingly a PPO2 of 1.6 is reached at about 218 feet of sea water. This depth, 218 fsw, is generally considered the maximum safe depth for a diver breathing air. The same formula can be used for other breathing gases. A diver breathing pure oxygen reaches 1.6 PPO2 at about 20 feet of seawater. A diver breathing Nitrox32, containing 32% oxygen, reaches 1.6 PPO2 at 132 feet. Note that much of this is moot for most recreational divers. Recreational dive training agencies set a maximum depth of 40 meters (130 feet) for a variety of reasons including avoidance of decompression illness.