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At constant temperature and pressure, the volumes of reacting gases (and any gaseous products) can be expressed as ratios of small whole numbers.

 

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Mother Nuclide

Nuclide that undergoes nuclear decay.

Endothermic

Describes processes that absorb heat energy.

Ore

A natural deposit containing a mineral of an element to be extracted.

Molecular Orbital Theory

A theory of chemical bonding based upon the postulated existence of molecular orbitals.

Actual Yield

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

Calorie

The amount of heat required to raise the temperature of one gram of water from 14.5°C to 15.5°C. 1 calorie = 4.184 joules.

Density

Density is the ratio b/w Mass and Volume: D=M/V

Equivalent Weight

An oxidizing or reducing agent, who's mass gains (oxidizing agents) or loses (reducing agents) 6.022 x 1023 electrons in a redox reaction.
The mass of an acid or base that furnishes or reacts with 6.022 x 1023 H3O+ or OH- ions.

Capillary

A tube having a very small inside diameter.

Anion

A negative ion, an atom or goup of atoms that has gained one or more electrons.