| 21. | Its chemical formula can be rendered as CH 3 CH 3.
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| 22. | The METLIN database currently contains accurate masses, chemical formulas, and structures.
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| 23. | For polymers in condensed chemical formulas, parentheses are placed around the repeating unit.
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| 24. | All three isomers have the chemical formula C 6 H 6 O 2.
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| 25. | His studies also resulted in a re-definition of the chemical formula.
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| 26. | Its empirical chemical formula is KC 6 H 7 O 6.
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| 27. | Many of the 1970s-era research papers involve complex chemical formulas and technical jargon.
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| 28. | This is accurate enough to directly determine the chemical formula of a molecule.
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| 29. | A chemical formula is not a chemical name, and it contains no words.
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| 30. | Amphetamine is a methyl homolog of the mammalian neurotransmitter phenethylamine with the chemical formula.
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