character: Argon Annie
topic: Uses of Argon in Industry
grade: 9
subject: Chemistry
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character: Argon Gas
topic: Applications of Argon in Welding
grade: 9
subject: Chemistry
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character: Argon in Lighting
topic: Usage of Argon in Fluorescent Lamps
grade: 9
subject: Chemistry
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character: Industrial Gases
topic: Role of Argon in Safety and Preservation
grade: 9
subject: Chemistry
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