Question

air used for artificial respiration is diluted with helium​

Answer 1

An oxygen-helium mixure is used artificial respiration in deep sea diving instead of air because nitrogen present in air dissolves in blood under high pressure when sea diver goes into deep sea. When he comes to the surface, nitrogen bubbles out of the blood due to decrease in pressure, causing pains

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Answer 2

Answer:

oxygen

Explanation:

An oxygen - helium mixture is used artificial respiration in sea diving instead of air because nitrogen present in air dissolves in blood under high pressure when sea diver goes into deep sea.