character: Mr. Tom Brown
topic: Introduction to Chromatography Techniques in Chemistry
grade: 11
subject: Chemistry
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character: Dr. Emily Smith
topic: Advanced Chromatography Methods for High School Students
grade: 11
subject: Chemistry
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character: Ms. Sarah Johnson
topic: Applications of Chromatography in Everyday Life
grade: 11
subject: Chemistry
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character: Mr. James Lee
topic: The Role of Chromatography in Environmental Chemistry
grade: 11
subject: Chemistry
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