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Old June 26, 2013, 10:40 AM   #5
wogpotter
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Join Date: September 27, 2004
Posts: 4,811
The oxygen is contained within the powder or it wouldn't ignite in the first place. Most chemical compounds ending with the "ate" suffix have oxygen chemically bonded into them. Examples ammonium nitrate potassium perchlorate & so on.

If you look at high speed photographs of muzzle flashes you can usually actually see burning "sparklers" of burning powder easily. Its just too fast for the unaided eye to record normally.
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