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The number of moles of a component of a mixture divided by the total number of moles in the mixture.

 

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Composition Stoichiometry

Descibes the quantitative (mass) relationships among elements in compounds.

Homogeneous Equilibria

Equilibria involving only one species in a single phase. For example, all gases, all liquids or all solids.

Alums

Hydrated sulfates of the general formula M+M3+(SO4)2.12H2).

Conjugated Double Bonds

Double bonds that are separated from each other by one single bond -C=C-C=C-.

Breeder Reactor

A nuclear reactor that produces more fissionable nuclear fuel than it consumes.

Greenhouse Effect

Trapping of heat at the surface of the earth by carbon dioxide and water vapour in the atmosphere.

Fast Neutron

A neutron ejected at high kinetic energy in a nuclear reaction.

Common Ion Effect

Suppression of ionization of a weak electrolyte by the presence in the same solution of a strong electrolyte containing one of the same ions as the weak electrolyte.

Reaction Quotient

The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

Equilibrium or Chemical Equilibrium

A state of dynamic balance in which the rates of forward and reverse reactions are equal, the state of a system when neither forward or reverse reaction is thermodynamically favored.