character: Professor Johnson
topic: Applications of Spectroscopy in Chemistry
grade: 9
subject: Chemistry
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character: Dr. Smith
topic: Understanding Chromatography in Chemical Analysis
grade: 9
subject: Chemistry
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character: Ms. Lee
topic: Introduction to Analytical Techniques in Chemistry
grade: 9
subject: Chemistry
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character: Mr. Brown
topic: The Role of Mass Spectrometry in Modern Chemistry
grade: 9
subject: Chemistry
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