What is elemental oxygen used for?

cleaning
welding
painting
fire extinguishing
Oxy-fuel welding was invented in 1903 by French en­gi­neers Edmond Fouché and Charles Picard. Pure oxygen, instead of air, is used to increase the flame tem­per­a­ture: a common propane/air flame burns at about 2,000 °C (3,630 °F), a propane/oxy­gen flame burns at about 2,500 °C (4,530 °F), and an acetylene/oxy­gen flame burns at about 3,500 °C (6,330 °F).

Answers distribution

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flagFinland
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Gender

men75%
women64%
cleaning
12%
18%
welding
75%
64%
painting
4%
3%
fire extinguishing
8%
13%

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What is elemental oxygen used for?
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Author: Monica Stiller
Illustration: Niklas Morberg
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