character: Ammonia
topic: Use of Ammonia in Refrigeration Systems
grade: 11
subject: Chemistry
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character: Refrigerants
topic: Alternative Refrigerants and Their Properties
grade: 11
subject: Chemistry
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character: Thermodynamics
topic: Thermodynamic Principles in Refrigeration
grade: 11
subject: Chemistry
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character: Safety Protocols
topic: Safety Considerations When Using Ammonia in Refrigeration
grade: 11
subject: Chemistry
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