character: Mr. Green
topic: Practical Lab Techniques for Dilution
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: Concentration Calculations in Chemistry
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: Basic Laboratory Safety Protocols
grade: 9
subject: Chemistry
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character: Dr. Lee
topic: Understanding Molarity and Molality
grade: 9
subject: Chemistry
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