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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.

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Indicators

For acid-base titrations, organic compounds that exhibit different colors in solutions of different acidities, used to determine the point at which reaction between two solutes is complete.

Actual Yield

Amount of a specified pure product actually obtained from a given reaction. Compare with Theoretical Yield.

Electrode Potentials

Potentials, E, of half-reactions as reductions versus the standard hydrogen electrode.

Alcohol

Hydrocarbon derivative containing an --OH group attached to a carbon atom not in an aromatic ring. Alcohols are a class of organic compounds containing the hydroxyl group, OH, attached to a carbon atom.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

Linear Accelerator

A device used for accelerating charged particles along a straight line path.

Alpha (a) Particle

Helium ion with 2+ charge, an assembly of two protons and two neutrons.

Mass Deficiency

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

Heat of Fusion

The amount of heat required to melt one gram of solid at its melting point with no change in temperature. Usually expressed in J/g. The molar heat of fusion is the amount of heat required to melt one mole of a solid at its melting point with no change in temperature and is usually expressed in kJ/mol.

Eluant or eluent

The solvent used in the process of elution, as in liquid chromatography.