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Secondary voltaic cell used in most automobiles.

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Quantum Numbers

Numbers that describe the energies of electrons in atoms, derived from quantum mechanical treatment.

Oxidation Numbers

Arbitrary numbers that can be used as mechanical aids in writing formulas and balancing equations, for single- atom ions they correspond to the charge on the ion, more electronegative atoms are assigned negative oxidation numbers (also called Oxidation states).

Conjugated Double Bonds

Double bonds that are separated from each other by one single bond -C=C-C=C-.

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Acyl Group

Compound derived from a carbonic acid by replacing the --OH group with a halogen (X), usually --Cl, general formula is O R--C--X.

Coulomb

Unit of electrical charge.

Heat of Solution

The amount of heat absorbed in the formation of solution that contains one mole of solute, the value is positive if heat is absorbed (endothermic) and negative if heat is released (exothermic).

Standard Molar Volume

The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.

xanthate

A salt or ester of xanthic acid. Many xanthates have a yellow color. Xanthates are used as flotation agents in mineral processing.

Salt Bridge

A U-shaped tube containing electrolyte, which connects two half-cells of a voltaic cell.