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Concentration expressed as number of moles of solute per kilogram of solvent.

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Heat Capacity

The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.

Degenerate

Of the same energy.

Melting Point

The temperature at which liquid and solid coexist in equilibrium, also the freezing point.

Pairing Energy

Energy required to pair two electrons in the same orbital.

Distilland

The material in a distillation apparatus that is to be distilled.

Pauli Exclusion Principle

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

Supercritical Fluid

A substance at temperature above its critical temperature.

Law of Combining Volumes (Gay-Lussac's Law)

At constant temperature and pressure, the volumes of reacting gases (and any gaseous products) can be expressed as ratios of small whole numbers.

 

DP number

The degree of polymerization, the average number of monomer units per polymer unit.

Percent Purity

The percent of a specified compound or element in an impure sample.