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A ternary compound containing H, O, and another element, often a nonmetal.

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yttria

Y2O3: A white, water-insoluble powder, Y2O3, used chiefly in incandescent gas and acetylene mantles.

Effective Molality

The sum of the molalities of all solute particles in a solution.

Rate-determining Step

The slowest step in a mechanism, the step that determines the overall rate of reaction.

Curie (Ci)

The basic unit used to describe the intensity of radioactivity in a sample of material. One curie equals 37 billion disintegrations per second or approximately the amount of radioactivty given off by 1 gram of radium.

Nodal Plane

A region in which the probability of finding an electron is zero.

 

Noble Gases (Rare Gases)

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

Organic Chemistry

The chemistry of substances that contain carbon-hydrogen bonds.

xylose

A colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.

Nonbonding Orbital

A molecular orbital derived only from an atomic orbital of one atom, lends neither stability nor instability to a molecule or ion when populated with electrons.

Carcinogen

A substance capable of causing or producing cancer in mammals.