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Pair of electrons residing on one atom and not shared by other atoms, unshared pair.

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Frasch Process

Method by which elemental sulfur is mined or extracted. Sulfur is melted with superheated water (at 170°C under high pressure) and forced to the surface of the earth as a slurry.

 

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Nonelectrolyte

A substance whose aqueous solutions do not conduct electricity.

Bronsted-Lowry Acid

A proton donor.

Functional Group

A group of atoms that represents a potential reaction site in an organic compound.

Buret

A piece of volumetric glassware, usually graduated in 0.1-mL intervals, that is used to deliver solutions to be used in titrations in a quantitative (dropwise) manner.

xylic acid

Any of six colorless, crystalline, isomeric acids having the formula C9H10O2, derived from xylene.

Supercritical Fluid

A substance at temperature above its critical temperature.

Endothermicity

The absorption of heat by a system as the process occurs.

Detergent

A soap-like emulsifer that contains a sulfate, SO3 or a phosphate group instead of a carboxylate group.