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Gasoline is a mixture of various hydrocarbons, most of which produce vapors that are denser than air.

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Yes, it will iginite.

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true

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Q: If gasoline vapors are heavier than air. Will they ignite or explode if they find a spark or open flame?
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Will gasoline ignite if left in the sun?

Depends. It's actually the vapor from gasoline that burns, and it would need a spark of some type to ignite it. If it is in an open container, it will simply evaporate. The vapors of evaporation would be very volatile and are easy to ignite with a spark. If its in a sealed container, then just being out in the sun should not cause it to ignite. However, that being said, I don't see any benefit to leaving a container of gas out in the sun, so it's probably not a good idea. presupposing that it is in a container, and that 'in the sun' means in direct sunlight & outdoors. The answer would be no. While gasoline will ignite at a very low temperature (-40 F) with a good spark, it requires a very high temp 475 F or so to self ignite.


Are organic vapors heavier or lighter than air?

It depends on the specific compound, though most are denser than air.


When mixed will ammonia and bleach explode?

Mixing bleach and ammonia is extremely dangerous, since toxic vapors will be produced. Chloramine vapor, with a potential for hydrazine formation is very toxic


Is superglue safe?

Safe to touch, but not the vapors the vapors are slightly toxic


Is ammonia heavier than air?

Ammonia (NH3), as used commercially, is often called anhydrous ammonia. This term emphasizes the absence of water in the material.Anhydrous ammonia gas is lighter than air and will rise, so that generally it dissipates and does not settle in low-lying areas. However, in the presence of moisture (such as high relative humidity), the liquefied anhydrous ammonia gas forms vapors that are heavier than air. These vapors may spread along the ground or into low-lying areas with poor airflow where people may become exposed.

Related questions

Why does gasoline ignite?

Gasoline ignites because gasoline is flammable. (simple answer) A more detailed answer would be. Gasoline produces flammable vapors at a much lower temperature than almost any other 'common' chemical. It is the vapors that ignite rather than the chemical itself. Also Gasoline vapors are heavier than air. Any 'Flammable' chemical will ignite in the presence of an open flame or spark if there are sufficient fumes.


What is the lowest temperature gasoline can ignite?

Typically the lowest temperature that gasoline will produce enough vapors to ignite at is -40 degrees Fahrenheit.


How can diesel be identified from petrol?

diesel vapors due not ignite like gasoline does. Also diesel has a totally different smell.


Is spilled gasoline dangerous in a house?

Dangerous flammable vapors are released in your home or garage every time there is a spill, or when the container of gasoline or other flammable liquid is not properly sealed. The silent, invisible vapors can travel, and if these vapors reach a source of ignition, like a faulty electric outlet, the spark from a running motor, or the pilot light of a home appliance, the vapors can ignite...and blow you clean out of the house.


How do molotov cocktails work?

Because only the vapors from gasoline will ignite, the fuse of the molotov cocktail burns in a controlled manner like the wick of a candle, until the glass container is shattered on impact. The vapors are then released, and the molotov cocktail bursts into flames.


What does 'Have a point' mean?

The flash point is the lowest temperature at which vapors of a liquid can ignite.


Why does petrol explode?

Flammable liquids give off vapors that will ignite under sufficient pressure, but generally speaking will not explode. Petrol vapor will flash at normal pressures in the correct air/fuel ratio. While not actually an explosion, it is a very fast burn and could create an explosion if contained.


What does it mean if an engine floods?

It means there is too much fuel in the combustion chamber to allow vapors to form. it is the vapors of the fuel that actually ignite.


Can a person heat gasoline safely to collect the vapors that is put off?

Theoretically, you could, but it would be extremely dangerous to do so unless you have the proper training and specialized equipment to safely process and collect it. The vapors are (unsurprisingly) extremely flammable, and the slightest spark, even from static electricity, could set it it off and make it explode. Plus, gasoline fumes are harmful to breathe in.


Can 100 proof whiskey ignite at very cold temperatures?

No, the norm is to heat alcohol to ignite it, this causes the whisky or other alcohol to give off vapors which can then be ignited. The flash point (temperature at which a substance gives off vapors) of alcohol is 54F (12C), so anything below that will not ignite.


What are dangers of static electricity?

Lightning is a discharge of static electricity that is potentially dangerous. Also, it may be a very small chance, but it is possible for static electricity to ignite the gasoline vapors during a fill up at the gas station.


Will gasoline ignite if left in the sun?

Depends. It's actually the vapor from gasoline that burns, and it would need a spark of some type to ignite it. If it is in an open container, it will simply evaporate. The vapors of evaporation would be very volatile and are easy to ignite with a spark. If its in a sealed container, then just being out in the sun should not cause it to ignite. However, that being said, I don't see any benefit to leaving a container of gas out in the sun, so it's probably not a good idea. presupposing that it is in a container, and that 'in the sun' means in direct sunlight & outdoors. The answer would be no. While gasoline will ignite at a very low temperature (-40 F) with a good spark, it requires a very high temp 475 F or so to self ignite.