does a fire need carbon dioxide to burn?
147861
Fires need oxygen to burn.
386954
Yes, it could be used, for two reasons.\n\nFire requires three components to occur,these are Fuel,Heat and Oxygen.\nRemoving any one of these will extinguish a fire.\nLiquid nitrogen would actually remove two, thus making it twice as effective!\n\nHope this helps.
772976
Combustion generally gives off CO2 and H2O vapor.
720001
strictly speaking, substances undergo combustion in the presence of oxygen and 'burn' would not be precise. \nhowever answering the question, oxygen is an oxidising substance and hence it is able to oxidise the organic subs. and usually converting them into carbon di oxide and water, and this is accompanied by the release of energy in the form of heat
679431
I think you mean why does water extinguish fir. Because it forms a layer of water over the combustable material which prevents oxygen getting at it. Fire needs heat, oxygen and a combustable material to continue. No oxygen-no fire.
606970
Ok, what gas is required for combustion??  OXYGEN!\nHydrogen and oxygen combine and release large amounts of energy/heat while form water in small amounts (in the form of vapor).  \n\nAs for other gases, carbon is the element "burning", but there must be oxygen present in the moluecule or in the environment to burn.\n\nThis is different for hydrogen in stars, which are undergoing fusion.
822974
You can grow a tree and fireproof it. Or find something with a pretty high combustion point and internalize the tree with. PERHAPS the tree won't burn. =)
730855
Water is not fire extinguisher. It is by chance that water extinguish fire. You know oxygen support burning or combustion while Carbon dioxide against it. If you put enough water that can prevent oxygen on fire, that fire will be extinguished/stopped because there is no more oxygen to support burning. But if the fire is a big one to the extent that no amount of water can cover it to prevent oxygen totally then water will fail to extinguish that fire. That is why water alone can not be used as fire extinguisher any where. it can only be part of materials used for fire extinguisher.\n\nbye
185732
combustion of a fuel involes it reacting with air to give carbon dioxide and water...its not the by-pdts which makes the fuel good but the energy liberated in the form of heat and light,which is then used to do work
474892
Fire is not a chemical, so there is no chemical symbol to represent it. However, numerous things burn, and these can be adequately described by a reaction. For example, wood is primarily cellulose: \n(C6H12O6)n + O2 --> H20 + C02 + heat + light\nPS. The above reaction is unbalanced. This is what happens when wood is burned - it turns into water and carbon dioxide. Note that "normal" fire only happens in the presence of oxygen. I say "normal" because there are other types of fire that don't involve oxygen.\nWe don't see any water because it evaporates from the heat of the fire as soon as it is formed. \nThe heat given off is the heat of the fire (obviously). \nThe light produced is what you see as fire.
1087539
When things "burn" the general reaction is as follows:\nCarbon + O2 --> CO2 + H2O\nThe CO2 and H2O are emitted as gasses, which means that the ash is everything that is left.  The composition of the ash depends on the starting material, and the black soot is most likely reduced carbon (such as graphite).
1137722
Fuel, Heat, Oxygen - Also known as the traditional fire triangle.\n\nFuel - Something that can be burned\n\nHeat - The fuel must be heated to the point that it can burn.  Yes, it's true that once the fire starts it can and does generate it's own heat, but if that heat were removed somehow (i.e. the application of water), the fire goes out.\n\nOxygen - Fire's need oxygen to burn.  This is either the oxygen in the air, or from the chemicals that are burning, such as oxidizers.  If you were to interrupt the oxygen with say another gas, such as CO2 (as in a CO2 fire extinguisher), or blanket the fuel with dry chemical, a fire blanket, foam, etc., the fire goes out.\n\nThere is actually a fourth component to fire, and that's the chemical chain reaction itself.  Adding this forth component changes the fire triangle to a fire tetrahedron.  If the chemical reaction is halted, say by adding Halon, FM-200, FE-13, or some other gaseous fire extinguishing agent, the fire goes out. (and NO, halon does not "suck" all the oxygen out of the air, there's much more to it than that.)\n\nThat all being said, I like hatingmsn's answer that you may also need a permit!  HEHE... good one and may actually be a fifth component!
674853
Exhaled air is only about 3% carbon dioxide and is still around 18% oxgyen.  This is not the reason.  If it were, blowing air with a fan or high wind would not blow it out.\nIt blows it out because you are separating the heat from the fuel source.  The bigger the fire, the harder you need to blow.  If they are separated and the fuel source is not hot enough to re-ignite, it blows out.
129886
Fire is the result of a combustion chemical reaction in which a hydrocarbon (a compound containing carbon and hydrogen) is reacted with oxygen forming carbon dioxide and water.  This reaction releases a lot of energy in the form of thermal (heat) radiation which is the result of fire.\n\nNote that there are other compounds which react with oxygen to release much energy and form oxides, but they're not relevant with respect to water.\n\nIce is water and not a hydrocarbon so it can not catch on fire.
729619
Acetate will burn really well if is divided up so that air can get to it.  It is flammable enough that movie film, when stored in large quantities,like in a movie studio vault, is considered a special fire hazard.
602895
The burner is designed to prevent a flash back. And most household flammable gases, like natural gas or propane  need oxygen to burn and there is no oxygen in the tank or the the pipe. You need 3 things to create fire,  fuel-oxygen- heat source or ignition.
391637
No, (or more correctly, not significantly) since the carbon dioxide being produced from the combustion was carbon that was already on the surface of the planet in one form or another (most likely as carbon dioxide the plant converted to glucose via photosynthesis).