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At constant pressure the volume occupied by a definite mass of gas is directly proportional to its absolute temperature.

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Leveling Effect

Effect by which all acids stronger than the acid that is characteristic of the solvent react with solvent to produce that acid, similar statement applies to bases. The strongest acid (base) that can exist in a given solvent is the acid (base) characteristic of the solvent.

van der Waals' Equation

An equation of state that extends the ideal gas law to real gases by inclusion of two empirically determined parameters, which are different for different gases.

Radical

An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)

Compressed Gas

A gas or mixture of gases having, in a container an absolute pressure exceeding 40 psi at 21.1°C (70°F)

Noble Gases (Rare Gases)

Elements of the periodic Group 0, also called rare gases, formerly called inert gases, He,Ne,Ar, Kr, Xe, Rn.

Calorimeter

A device used to measure the heat transfer between system and surroundings.

Dissociation

In aqueous solution, the process in which a solid ionic compound separates into its ions.

Mass Spectrometer

An instrument that measures the charge-to-mass ratio of charged particles.

Inhibitory Catalyst

An inhibitor, a catalyst that decreases the rate of reaction.

Organic Chemistry

The chemistry of substances that contain carbon-hydrogen bonds.