Medical air, used for respiratory support, is a mixture of approximately 21% oxygen and 79% nitrogen. While pure oxygen is also used in certain medical scenarios, it is often blended with nitrogen or air to mitigate potential toxicity. Helium and argon are noble gases and not typically used in standard respiratory oxygen mixtures. Carbon dioxide is exhaled by the body and not added to inhaled oxygen.
In hospitals, the oxygen tubes for respiration contain oxygen and
Asked in Asstt. System Manager 2021 · Topic: Physical Properties of Materials (Density and Specific Gravity)
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