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Which outcome occurs when a closed vessel of water under pressure experiences rapid adiabatic expansion?

A)Freezing due to change in phase
B)Boiling after exceeding vapor pressure
C)Constant-temperature density increase occurs
D)Increased pressure raises boiling point

💡 Explanation

Cooling induces ice crystal nucleation (freezing) because adiabatic expansion reduces the internal energy/temperature. The first phase transition, rather than immediate boiling or stable density increase, occurs because ice nucleation is favored at the lower temperature.

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