In a Mixture of Hydrogen and Helium Gases,the Mole Fraction $\times$

question 4

Multiple Choice

In a mixture of hydrogen and helium gases,the mole fraction of helium is 0.75.If the partial pressure of hydrogen in the mixture is 75 torr,what is the total pressure of the mixture?

• A)1.0 \(\times\) 10² torr
• B)3.0 \(\times\) 10² torr
• C)1.9 \(\times\) 10¹ torr
• D)7.5 \(\times\) 10² torr
• E)7.6 \(\times\) 10² torr

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Definitions:

Ventral Rami

Branches of spinal nerves that innervate the anterior and lateral parts of the trunk and the limbs.

Sensory Neurons

Nerve cells that transmit sensory information (e.g., sight, sound, touch) from the peripheral body to the central nervous system.

Dorsal Rami

Branches of spinal nerves that innervate muscles and skin of the back.

Endorphins

Natural pain-relieving and happiness-inducing chemicals produced by the brain in response to stress or discomfort.