prirodna rasprostranjenost

prirodna rasprostranjenost

Prosječan udio atoma određenog izotopa nekog elementa na Zemlji.

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Industry/Domain: Chemistry
Category: General chemistry
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rasprostranjenost izotopa

Chemistry; General chemistry

Frakcija atoma određenog izotopa u uzorku elementa.

prirodna selekcija

Biology; Ecology

Nature's selection of viable strengths through environmental pressures that force an organism to adapt. The bat that hears better than the rest stands a better chance of living ...

prirodna ventilacija

Mining; Coal

Ventilation without the use of artificial means, such as fans or other devices.

prirodna promaja

Fire safety; Prevention & protection

A cooling tower containing no fans or blowers, in which air movement depends on the difference in densities of the heated air inside the tower and the cooler air outside.

prirodna prava

Sociology; Criminology

The rights which, according to natural law theorists, individuals retain in the face of government action and interests.

isparljiv

Chemistry; General chemistry

A solid or liquid material that easily vaporizes. A material with a significant vapor pressure .

abraziv

Chemistry; General chemistry

A very hard, brittle, heat-resistant substance that is used to grind the edges or rough surfaces of an object. boron carbide, diamond, and corundum are abrasives.

diastereoizomer, diastereomer

Chemistry; General chemistry

Stereoisomers which are not mirror images of each other. Diastereomers are chemically similar but distinguishable; they have different melting points and boiling points and they ...

medicinska hemija

Chemistry; General chemistry

A branch of chemistry concerned with the discovery, design, synthesis , and investigation of biologically active compounds and reactions that these compounds undergo in living ...

slab elektrolit

Chemistry; General chemistry

A weak electrolyte is a solute that incompletely dissociates into ions in solution. For example, acetic acid partially dissociates into acetate ions and hydrogen ions, so that ...