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The entropy of a hypothetical pure, perfect, crystalline sustance at absolute zero temperature is zero.

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Salt and its use in everyday life

Cooking salt is a product that is available in every kitchen, and it’s not as simple as it seems. The history of this product shows that it was valued like gold.

Cis-

The prefix used to indicate that groups are located on the same side of a bon about which rotation is restricted.

Dimer

Molecule formed by combination of two smaller (identical) molecules.

Nitrogenases

A class of enzymes found in bacteria within root nodules in some plants, which catalyze reactions by which N2 molecules from the air are converted to ammonia.

 

Ostwald Process

A process for the industrial production of nitrogen oxide and nitric acid from ammonia and oxygen.

Percent Composition

The mass percent of each element in a compound.

Vapor Pressure

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

Ionization Energy

The minimum amount of energy required to remove the most loosely held electron of an isolated gaseous atom or ion.

Raoult's Law

The vapor pressure of a solvent in an ideal solution decreases as its mole fraction decreases.

Ore

A natural deposit containing a mineral of an element to be extracted.