character: Dr. Smith
topic: Acid-Base Reactions in Water Treatment
grade: 11
subject: Chemistry
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character: Ms. Johnson
topic: Chemical Properties of Water
grade: 11
subject: Chemistry
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character: Mr. Lee
topic: pH Levels and Environmental Impact
grade: 11
subject: Chemistry
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character: Dr. Patel
topic: Innovations in Water Purification Techniques
grade: 11
subject: Chemistry
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