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Old 07 August 2007, 09:39 PM
Deepfrydegg
 
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Yes and No.

Gasoline below the surface is not flammable. Only because the top layer of Gas (that IS burning) is keeping the oxygen away from the lower layer. (like DaGuyWitBluGlasses said)

Gasoline vapor has a Lower explosive limit (LEL) of 1.4% (meaning when the atmosphere has 1.4% gasoline fumes, and a spark is introduced = Big BOOM!)
Conversely, the Upper Explosive limit (UEL) is 7.6% (meaning beyond 7.6% gas, there is not enough oxygen to support an explosion).
Additional problem with that UEL, most people would suffocate from lack of oxygen.
(all numbers provided by the National Institute of Occupational Safety and Health [NIOSH])
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