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What are the properties of oxygen gas?

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lkehoe | Valedictorian

Posted August 18, 2013 at 9:45 PM via web

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What are the properties of oxygen gas?

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tjbrewer | Elementary School Teacher | (Level 2) Associate Educator

Posted August 18, 2013 at 9:58 PM (Answer #1)

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Oxygen has atomic number 8, its atomic mass is 15.9994 (usually rounded to 16).  It's chemical symbol is O.  Ordinary oxygen molecules have two oxygen molecules bonded together by covalent bonds `O_(2)` and is a colorless, odorless, tasteless gas.  Sometimes it occurs as three atoms `O_(3)` this is known as ozone. 
Boiling point is `-182.962^(@)C` at normal atmospheric pressure.  At 730 psi, the boiling point rises to -118.8.  (these are the critical pressure and temperatures of Oxygen, it does not liquefy at temps or pressures higher than these).  In liquid form Oxygen is magnetic, and can be held between the poles of a strong magnet.  Freezing point is -218.4C. 

Oxygen readily forms compounds with other elements.  These compounds are called oxides. 

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