Question

Give reasons for the following statement:

The Helium-Oxygen mixture is used by deep-sea divers.

Answer 1

• In order to breathe in the deep sea, divers use the Helium-Oxygen mixture.
• Helium is much less soluble in blood and it does not have any narcotic effect.
• Therefore, a Helium($\mathrm{He}$)-Oxygen(${\mathrm{O}}_2$) mixture is used by deep-sea divers.