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Platinum is a chemical element used in the chemical industry as a catalyst for the production of nitric acid, silicone and benzene. Crude platinum stone, industrial use.
Disassembled and cut in half, automotive catalytic converter exhaust, which is out of order
Lanthanum A soft, reactive metal; used in catalysts and camera lenses.
charcoal isolated on white background.
Chemistry beakers with Erlenmeyer flask and test tube holding chemicals flat vector icon for science apps and websites

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