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Refers to different atomic forms of all elements in contrast to ?isotopes?, which refer only to different atomic forms of a single element.

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Coulometry

The quantitative application of Faraday's Law to the analysis of materials. The current and time are the usual variables measured.

Ozone

We breathe 24 hours a day, 7 days a week, consuming about 25 kg of air every day. It turns out that we practically predetermine our health by the air we breathe.

Sublimation

The direct vaporization of a sold by heating without passing through the liquid state.

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Mass Action Expression

For a reversible reaction, aA + bB cC + dD the product of the concentrations of the products (species on the right), each raised to the power that corresponds to its coefficient in the balanced chemical equation, divided by the product of the concentrations of reactants (species on the left), each raised to the power that corresponds to its coefficient in the balanced chemical equation. At equilibrium the mass action expression is equal to K, at other times it is Q.[C]c[D]d [A]a[B]b = Q, or at equilibrium K.

Corrosion

Oxidation of metals in the presence of air and moisture.

xanthate

A salt or ester of xanthic acid. Many xanthates have a yellow color. Xanthates are used as flotation agents in mineral processing.

Raoult's Law

The vapor pressure of a solvent in an ideal solution decreases as its mole fraction decreases.

Alkylbenzene

A compound containing an alkyl group bonded to a benzene ring.

Aromatic Hydrocarbons

Benzene and its derivatives.