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Number of moles of a solute that dissolve to produce a litre of saturated solution.

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Electromotive Series

The relative order of tendencies for elements and their simple ions to act as oxidizing or reducing agents, also called the activity series.

Condensation

Liquefaction of vapor.

Hydrometer

A device used to measure the densities of liquids and solutions.

Molarity

Number of moles of solute per litre of solution.

Aryl Group

Group of atoms remaining after a hydrogen atom is removed from the aromatic system.

Acetic Acid

CA3COOH, clear, colorless liquid, pungent odor. Boiling point 140C, flash point 54C (closed cup), autoignition temperature 38OC.

Endothermic

Describes processes that absorb heat energy.

Exothermic

Describes processes that release heat energy.

Nitric Acid

HNO3: A strong acid, it is toxic and can cause severe burns. Transparent colorless or yellowish, fuming, suffocating, caustic and corrosive liquid. Nitric acid boiling point is 83C. A 70 percent solution is used in the S.S.E. laboratory for junction depth measurements. Nitric acid is also present in the metal etch solution used for the Aluminum etch procedure.

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.