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Equilibrium constant for the ionization of a weak electrolyte.

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Curie (Ci)

The basic unit used to describe the intensity of radioactivity in a sample of material. One curie equals 37 billion disintegrations per second or approximately the amount of radioactivty given off by 1 gram of radium.

Dermal toxicity

Adverse health effects resulting from skin exposure ot a substance.

Compressed Gas

A gas or mixture of gases having, in a container an absolute pressure exceeding 40 psi at 21.1°C (70°F)

Atomic Weight

Weighted average of the masses of the constituent isotopes of an element, The relative masses of atoms of different elements.

Matter

Anything that has mass and occupies space.

Mother Nuclide

Nuclide that undergoes nuclear decay.

Law of Partial Pressures (Dalton's Law)

The total pressure exerted by a mixture of gases is the sum of the partial pressures of the individual gases.

Eluant or eluent

The solvent used in the process of elution, as in liquid chromatography.

 

Pauli Exclusion Principle

No two electrons in the same atom may have identical sets of four quantum numbers.

Polymorphous

Refers to substances that crystallize in more than one crystalline arrangement.