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Essay's paper info
| Topic: |
Science
|
| Number of pages / Number of words: |
3 / 763 |
Essay's paper body
It
comprises 99.76 percent of ordinary oxygen and was used in determination of
atomic weights until the 1960s.
Oxygen is prepared in the laboratory from salts such as potassium
chlorate, barium peroxide, and sodium peroxide. The most important industrial
methods for the preparation of oxygen are the electrolysis of water and the
fractional distillation of liquid air...
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In the latter method, air is liquefied
and allowed to evaporate. The nitrogen in the liquid air is more volatile and
boils off first, leaving the oxygen. Oxygen is stored and shipped in either
liquid or gaseous form.
Oxygen is a component of many organic and inorganic compounds. It forms
compounds called oxides with almost all the elements, including some of the
noble gases...
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