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Oxygen
, symbol O, colorless, odorless, tasteless, slightly magnetic
gaseous element. On earth, is more abundant than any other element.
was discovered in 1774 by the British chemist Joseph Priestley and,
independently, by the Swedish chemist Carl Wilhelm Scheele; it was shown to be
an elemental gas by the French chemist Antoine Laurent Lavoisier in his classic
experiments on combustion.
Large amounts of oxygen are used in high-temperature welding torches, in
which a mixture of oxygen and another gas produces a flame of much higher
temperature than is obtained by burning gases ....
Word count: 752 - Page count: 3
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