character: Mr. John Smith
topic: Understanding Avogadro's Number in Chemical Calculations
grade: 9
subject: Chemistry
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character: Ms. Emily Johnson
topic: The Concept of Moles in Chemistry
grade: 9
subject: Chemistry
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character: Mr. Robert Brown
topic: Stoichiometry and Its Importance in Chemical Equations
grade: 9
subject: Chemistry
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character: Dr. Sarah Davis
topic: Exploring the Mole and Avogadro's Constant
grade: 9
subject: Chemistry
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