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It is recommended that at least ____________________ a year, the probe should be removed from the water reservoir and cleaned.
Oxygen
A chemical element with symbol O and atomic number 8, essential for aerobic respiration in living organisms.
Lewis Structure
A diagram that represents the bonding of atoms within a molecule using dots for electrons and lines for bonds.
Acetonitrile
A colorless, volatile liquid used as a solvent in organic synthesis and in the pharmaceutical industry.
Lone Pairs
Pairs of valence electrons that are not shared with another atom and do not participate in bonding, but significantly influence the shape and properties of molecules.
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