character: Dr. Emily Chen
topic: Concentration and Its Role in Reaction Rates
grade: 9
subject: Science
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character: Dr. Mark Thompson
topic: Factors Affecting the Rate of Chemical Reactions
grade: 9
subject: Science
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character: Ms. Sarah Johnson
topic: Chemical Kinetics and Reaction Mechanisms
grade: 9
subject: Science
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character: Mr. Alan Smith
topic: Understanding Molarity and Reaction Rates
grade: 9
subject: Science
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