character: Mr. Patel
topic: Stoichiometry in Reactions
grade: 9
subject: Chemistry
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character: Ms. Lee
topic: Balancing Chemical Equations
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: Mole Concept Basics
grade: 9
subject: Chemistry
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character: Mrs. Smith
topic: Types of Chemical Reactions
grade: 9
subject: Chemistry
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