Oxygen vs X - What's the difference?
oxygen | x |
A chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994.
Molecular oxygen (O2), a colorless, odorless gas at room temperature.
* {{quote-magazine, year=2013, month=September-October, author=
, magazine=(American Scientist), title= (medicine) A mixture of oxygen and other gases, administered to a patient to help him or her to breathe.
(countable) An atom of this element.
The twenty-fourth letter of the .
Image:Latin X.png, Capital and lowercase versions of X , in normal and italic type
Image:Fraktur letter X.png, Uppercase and lowercase X in Fraktur
Roman numerals
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As a noun oxygen
is a chemical element (symbol o) with an atomic number of 8 and relative atomic mass of 159994.As a letter x is
the twenty-fourth letter of the.As a symbol x is
voiceless velar fricative.oxygen
English
Noun
(wikipedia oxygen)Katie L. Burke
In the News, passage=Oxygen' levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis: the ability to convert water and carbon dioxide into carbohydrates and waste ' oxygen using solar energy. The evolutionary precursor of photosynthesis is still under debate, and a new study sheds light.}}