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

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Heterogeneous Catalyst

A catalyst that exists in a different phase (solid, liquid or gas) from the reactants, a contact catalyst.

D-Orbitals

Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.

 

Pauli Exclusion Principle

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

Half-Cell

Compartment in which the oxidation or reduction half-reaction occurs in a voltaic cell.

Avogadro's Number

The number (6.022x10^23) of atoms, molecules or particles found in exactly 1 mole of substance.

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

xanthene dye

Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.

 

K Capture

Absorption of a K shell (n=1) electron by a proton as it is converted to a neutron.

Substance

Any kind of matter all specimens of which have the same chemical composition and physical properties.

 

ytterbia

Ytterbia is a colorless compound, Yb2O3, used in certain alloys and ceramics. Also known as ytterbium oxide.