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A favourable interaction of two electrons with opposite m , values in the same orbital.

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Electrode Potentials

Potentials, E, of half-reactions as reductions versus the standard hydrogen electrode.

xylose

A colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.

Frequency

The number of repeating corresponding points on a wave that pass a given observation point per unit time.

Enantiomer

One of the two mirror-image forms of an optically active molecule.

Molecular Weight

The mass of one molecule of a nonionic substance in atomic mass units.

Second Law of Thermodynamics

The universe tends toward a state of greater diorder in spontaneous processes.

Kinetic-molecular Theory

A theory, that attempts to explain macroscopic observations on gases in microscopic observations on gases in microscopic observations on gases in microscopic or molecular terms.

Conjugated Double Bonds

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

Barometer

A device for measuring pressure.

Eluant or eluent

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