Question

The tanks used by scuba divers are filled with air diluted with 11.7% He,


(1) 56.2% N2 and 32.1% 02
(2) 56.2% O2 and 32.1 %N2
(3) 50.2% N2 and 38.1 %O2
(4) 50.2% O2 and 38.1% N2



solution plzzz


don't xd​

Answer 1

Answer:option 1

Explanation: scuba divers use a tank filled with air diluted to avoid toxic effect of high concentration of nitrogen in the blood because of increase in pressure under water as pressure become greater with depth both air consumption rate and nitrogen absorption increases that is other gases that are present in including oxygen and nitrogen started dissolving in our blood due to increase in solubility and We know air containing 78% of nitrogen .

Answer 2

The tanks used by scuba divers are filled with air diluted with 11.7% He, 56.2% N2, and 32.1% 02. The correct answer is option A.

• We know that the 'normal air we breathe in' contains 78% of nitrogen.
• A Scuba diver always uses the tank filled with air diluted with helium to decrease its nitrogen concentration in the inhaled air.
• The higher concentration of nitrogen induces toxic effects in the blood and increases the risk of decompression sickness.
• The increase in depth of the underwater causes an increase in pressure underwater, and this causes the increase in both air consumption rate and subsequent nitrogen absorption.
• To reduce the risk of health hazards and allow the longer exposure to the same water pressure against equal risk, scuba divers avoid 78% nitrogen and prefer a lesser concentration of nitrogen.
• Therefore, the tanks used by scuba divers are filled with air diluted with 11.7% He, 56.2% N2, and 32.1% 02. The correct answer is option A.

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