character: Dr. Jane Smith
topic: Applications of Rare Gases in Refrigeration
grade: 12
subject: Chemistry
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character: Dr. Emily Johnson
topic: Thermodynamic Principles of Refrigeration
grade: 12
subject: Chemistry
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character: Dr. Michael Lee
topic: Alternative Refrigerants: Environmental Impacts
grade: 12
subject: Chemistry
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character: Prof. Sarah Brown
topic: Cryogenic Applications of Noble Gases
grade: 12
subject: Chemistry
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