Examlex
Before performing a capillary puncture, you must wipe the desired site with a cotton ball soaked with:
Nitrite Ion
A polyatomic ion with the molecular formula NO2-, derived from nitrous acid.
Methane
A colorless, odorless flammable gas that is the simplest alkane, used as a fuel and in chemical synthesis, with the chemical formula CH4.
Resonance Structures
Different Lewis structures for a molecule that cannot be represented by a single structure but are a hybrid of the possibilities, contributing to the molecule's overall structure.
Valence Shell
The outermost shell of electrons in an atom that is involved in chemical bonding.
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