Is helium used in diving apparatus?
Answer: Because of its low solubility (as compared to N2) in blood, a mixture of oxygen and helium is used in diving apparatus used by deep sea divers.
Which inert gas is used in diving apparatus?
Helium along with oxygen is used in the diving apparatus by the sea divers. Since it is very little soluble in blood, it reduces decompression and causes less discomfort to the diver in breathing.
Which inert gas is used as diluent?
Helium has a much lower blood: gas solubility coefficient than air, therefore absorption is considerably slower than with nitrogen. It can also be used as a tank diluent gas, as the percentage of oxygen required at depth decreases because of the increased partial pressure. Helium use, however, is not without its risks.
What is modern diving apparatus?
Hint: As dive depth increases, ambient pressure increases-increasing the divers exposure to breathing gases. … For this reason it will generally become increasingly narcotic, the deep we move towards the bed of the sea.
Why do divers use helium?
The main reason for adding helium to the breathing mix is to reduce the proportions of nitrogen and oxygen below those of air, to allow the gas mix to be breathed safely on deep dives. A lower proportion of nitrogen is required to reduce nitrogen narcosis and other physiological effects of the gas at depth.
Why helium is used in balloons?
Helium is an inert gas, which means that it does not react with other substances. It has the lowest boiling point of any element at -269C and a low density which is why it is used to make items float.
Why is he used as diluent?
He is used as a diluent for oxygen in modern diving apparatus because of its very low solubility in blood.
What is Bend?
Decompression sickness: Often called “the bends,” decompression sickness happens when a scuba diver ascends too quickly. Divers breathe compressed air that contains nitrogen. At higher pressure under water, the nitrogen gas goes into the body’s tissues.
Why is helium diluted with oxygen?
Air contains a large amount of nitrogen and the solubility of gases in liquids increases with increase in pressure. … Therefore, air in oxygen cylinders used for diving is diluted with helium gas. This is done as He is sparingly less soluble in blood.