Sea divers use a mixture of gases for breathing during diving. The mixture is:

Sea divers use a mixture of gases for breathing during diving. The mixture is:
20%O2 & 40% N2 40% CO2
Well Done. Your Answer is Correct Keep it Up!
80% N2 & 20 O2
80% He & 20%O2
50% He & 50% O2

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