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Name:  t xayaseang
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: 1999 


Question:
What can oxygen be used for?



Replies:
The most important use of oxygen is for breathing. Animals require oxygen in their air (or water) to live. Another use for oxygen is for oxidation reactions -- the most obvious example is burning. Fires require oxygen to burn. Some fire extinguishers work by preventing oxygen from reaching the burning materials. By adding oxygen (more than is in the air) to a fire it will burn hotter. This is how an oxy-acetylene torch works. The additional oxygen makes the flame much hotter and it can effectively cut metal (by melting it).

gregory r bradburn



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