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The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.

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Distilland

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

Reaction Quotient

The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

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.

Amino Acid

Compound containing both an amino and a carboxylic acid group.The --NH2 group.

Capillary Action

The drawing of a liquid up the inside of a small-bore tube when adhesive forces exceed cohesive forces, or the depression of the surface of the liquid when cohesive forces exceed the adhesive forces.

Compound

A substance of two or more elements in fixed proportions. Compounds can be decomposed into their constituent elements.

Square Planar

A term used to describe molecules and polyatomic ions that have one atom in the center and four atoms at the corners of a square.

Alkyl Group

A group of atoms derived from an alkane by the removal of one hydrogen atom.

Functional Group

A group of atoms that represents a potential reaction site in an organic compound.

Tetrahedral

A term used to describe molecules and polyatomic ions that have one atom in center and four atoms at the corners of a tetrahedron.