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Which outcome occurs when compressed gaseous hydrogen flows through a porous plug?

A)Temperature decreases by Joule-Thomson effect
B)Density remains constant throughout expansion
C)Enthalpy decreases due frictional resistance
D)Kinetic energy always increases indefinitely

💡 Explanation

The temperature decreases because the isenthalpic expansion cools the gas. This cooling is result of the Joule-Thomson effect where intermolecular forces dominate, therefore temperature drops, rather than enthalpy decreasing or kinetic energy perpetually increasing at constant levels.

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