A Mixture of N₂, O₂, and Ar Has Mole Fractions

question 89

Multiple Choice

A mixture of N₂, O₂, and Ar has mole fractions of 0.25, 0.65, and 0.10, respectively. What is the pressure of N₂ if the total pressure of the mixture is 3.9 bar?

• A) 2.5 bar
• B) 0.39 bar
• C) 0.67 bar
• D) 0.98 bar
• E) 1.33 bar

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Definitions:

Vasomotor Center

A regulatory area in the medulla oblongata of the brain responsible for controlling blood vessel diameter and thus blood pressure.

Blood Pressure

The force exerted by circulating blood upon the walls of blood vessels, often measured to assess heart and vascular health.

Stress-Relaxation Response

A physiological response where muscle tension decreases over time when the muscle is stretched to a fixed length.

Oxygen Tension

The partial pressure of oxygen, an indicator of its concentration in blood or tissues, important for cellular respiration and metabolism.