character: Dr. Johnson
topic: Balancing Chemical Equations
grade: 12
subject: Chemistry
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character: Professor Smith
topic: Types of Chemical Reactions
grade: 12
subject: Chemistry
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character: Ms. Taylor
topic: Stoichiometry and Molar Relationships
grade: 12
subject: Chemistry
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character: Mr. Brown
topic: Understanding Reaction Rates
grade: 12
subject: Chemistry
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