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The amount of water that would absorb the same amount of heat as the calorimeter per degree temperature increase.

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Percent Composition

The mass percent of each element in a compound.

Molecular Orbital

An orbit resulting from overlap and mixing of atomic orbitals on different atoms. An MO belongs to the molecule as a whole.

Chemical Bonds

The attractive forces that hold atoms together in elements or compounds.

pH

Negative logarithm of the concentration (mol/L) of the H3O+[H+] ion, scale is commonly used over a range 0 to 14.

Associated Ions

Short-lived species formed by the collision of dissolved ions of opposite charges.

Boron Hydrides

Binary compounds of boron and hydrogen.

Solution

Homogeneous mixture of two or more substances.

Optical Isomers

Stereoisomers that differ only by being nonsuperimposable mirror images of each other, like right and left hands, also called enantiomers.

Coordination Isomers

Isomers involving exchanges of ligands between complex cation and complex anion of the same compound.

Molecular Formula

Formula that indicates the actual number of atoms present in a molecule of a molecular substance.