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

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Amino Acid

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

Mass Deficiency

The amount of matter that would be converted into energy if an atom were formed from constituent particles.

Monoprotic Acid

Acid that can form only one hydronium ion per molecule, may be strong or weak. Acid that contains one ionizable hydrogen atom per formula unit.

Viscosity

Resistance offered by the molecules of a liquid to flow is termed as viscosity.

Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.

yttrium

A rare trivalent metallic element, found in gadolinite and other minerals. Symbol: Y, at. wt.: 88.905, at. no.: 39, sp. gr.: 4.47. Cf."rare-earth element."

Yttrium has a silver-metallic luster and is relatively stable in air unless finely divided. Turnings of the metal, however, ignite in air if their temperature exceeds 400oC. Yttrium oxide is one of the most important compounds of yttrium and accounts for the largest use. It is widely used in making YVO4 europium, and Y2O3 europium phosphors to give the red color in color television tubes.

Radiation

High energy particles or rays emitted during the nuclear decay processes.

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.

Integrated Rate Equation

An equation giving the concentration of a reactant remaining after a specified time, has different mathematical form for different orders of reactants.

Explosive

A chemical or compound that causes a sudden, almost instantaneous release or pressure, gas, heat and light when subjected to sudden shock, pressure, high temperature or applied potential.

Phosphoric Acid

H3P04, Colorless liquid or rhombic crystals, decomposes before it will boil. Used mostly in the metal etchant. Used in cleaning operations to remove encrusted surface matter and mineral scale found on metal equipment such as boilers and steam producing equipment. Also used to brighten metals and remove rust.

Dipole Moment

The product of the distance separating opposite charges of equal magnitude of the charge, a measure of the polarity of a bond or molecule, a measured dipole moment refers to the dipole moment of an entire molecule.

Saccharic

of or derived from saccharin or a saccharine substance.

 

Dipole-dipole Interactions

Attractive interactions between polar molecules, that is, between molecules with permanent dipoles.

Critical Temperature

The temperature above which a gas cannot be liquefied, the temperature above which a substance cannot exhibit distinct gas and liquid phases.

Endothermicity

The absorption of heat by a system as the process occurs.

Endothermic

Describes processes that absorb heat energy.

Vapor

A gas formed by boiling or evaporating a liquid.

Saccharide

An organic compound containing a sugar or sugars.

Isoelectric

Having the same electronic configurations.