Which thermodynamic outcome accelerates during isenthalpic expansion across a throttling valve?

💡 Explanation

Increased entropy is achieved because isenthalpic expansion reduces pressure, potentially causing liquids turning into gasses via the Joule-Thomson effect. This drives phase change which inherently increases entropy, rather than kinetic energy changes associated with simple expansion.

• Which consequence results when enriched uranium fuel containing excessive uranium-234 isotopes is used in a pressurized water reactor?
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