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A method used to determine the molecular weights of volatile liquids.

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Formula Weight

The mass of one formula unit of a substance in atomic mass units.

 

Cell Potential

Potential difference, Ecell, between oxidation and reduction half-cells under nonstandard conditions.

 

Radioactive Dating

Method of dating ancient objects by determining the ratio of amounts of mother and daughter nuclides present in an object and relating the ratio to the object?s age via half-life calculations.

Percent by Mass

100% times the actual yield divided by theoretical yield.

Absorption Spectrum

Spectrum associated with absorption of electromagnetic radiation by atoms (or other species) resulting from transitions from lower to higher energy states. An absorption spectrum is the inverse of an emission spectrum.

Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Extensive Property

A property that depends upon the amount of material in a sample.

PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.

Chemical Equilibrium

A state of dynamic balance in which the rates of forward and reverse reactions are equal, there is no net change in concentrations of reactants or products while a system is at equilibrium.

Nuclear Fission

The process in which a heavy nucleus splits into nuclei of intermediate masses and one or more protons are emitted.