character: Mr. Johnson
topic: Oxygen Reduction Reactions (ORR) in Everyday Chemistry
grade: 11
subject: Chemistry
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character: Ms. Smith
topic: Electrochemical Cells and ORR
grade: 11
subject: Chemistry
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character: Dr. Lee
topic: Reactions of Oxygen in Biological Systems
grade: 11
subject: Chemistry
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character: Mr. Brown
topic: Applications of ORR in Fuel Cells
grade: 11
subject: Chemistry
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