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Two methyl groups of the same carbon atom.

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Percent by Mass

100% times the actual yield divided by theoretical yield.

Emulsifying Agent

A sustance that coats the particles of the dispersed phase and prevents coagulation of colloidal particles, an emulsifier.

Line Spectrum

An atomic emission or absorption spectrum.

High Spin Complex

Crystal field designation for an outer orbital complex, all t2g and eg orbitals are singly occupied before any pairing occurs.

Electrophoresis

A technique for separation of ions by rate and direction of migration in an electric field.

Associated Ions

Short-lived species formed by the collision of dissolved ions of opposite charges.

Ostwald Process

A process for the industrial production of nitrogen oxide and nitric acid from ammonia and oxygen.

Monoprotic Acid

Acid that can form only one hydronium ion per molecule, may be strong or weak. Acid that contains one ionizable hydrogen atom per formula unit.

Gem-dimethyl group

Two methyl groups of the same carbon atom.

xylene

Any of three oily, colorless, water-insoluble, flammable, toxic, isomeric liquids, C8H10, of the benzene series, obtained mostly from coal tar: used chiefly in the manufacture of dyes.