character: Dr. Jones
topic: The Role of pH in Water Treatment
grade: 11
subject: Chemistry
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character: Dr. Smith
topic: Chemical Reactions in Water Treatment
grade: 11
subject: Chemistry
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character: Ms. Taylor
topic: Understanding Water Quality Parameters
grade: 11
subject: Chemistry
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character: Mr. Lee
topic: The Importance of pH in Environmental Chemistry
grade: 11
subject: Chemistry
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