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← ScienceWhich 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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