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The pentosan occurring in woody tissue that hydrolyzes to xylose: used as a source of furfural.

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Barometer

A device for measuring pressure.

Lewis Base

Any species that can make available a share in an electron pair.

Flash Point

The temperature at which a liquid will yield enough flamable vapour to ignite. There are various recognized industrial testing methods, therefore the method used must be stated.

The most expensive metal in the world

Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.

Low Spin Complex

Crystal field designation for an inner orbital complex, contains electrons paired t2g orbitals before eg orbitals are occupied in octahedral complexes.

Miscibility

The ability of one liquid to mix with (dissolve in) another liquid.

Water Equivalent

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

Saponification

Hydrolysis of esters in the presence of strong soluable bases.

Substance

Any kind of matter all specimens of which have the same chemical composition and physical properties.

 

Radical

An atom or group of atoms that contains one or more unpaired electrons (usually very reactive species)