Which list gives nonmetals that are found in their elemental forms in nature? (a) neon, phosphorus, fluorine (b) helium, hydrogen, iodine (c) nitrogen, oxygen, sulfur (d) oxygen, chlorine, phosphorus?

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What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

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