character: Dr. Lewis
topic: Introduction to Heterogeneous Catalysis
grade: 9
subject: Chemistry
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character: Professor Smith
topic: Understanding Reaction Mechanisms
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: The Role of Catalysts in Chemical Reactions
grade: 9
subject: Chemistry
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character: Mr. Brown
topic: Types of Catalysts and Their Applications
grade: 9
subject: Chemistry
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