Is methane identical to liquid propane? If so, how would I condense the gas to a liquid form?
414498
Methane is a signle atom of carbon surrounded by four hydrogen atoms (CH4). Propane is a linear string of 3 carbon atoms, each surrounded by hydrogen atoms (C3H8). So no, they are not the same. Methane is also know as natural gas. Methane burns extremely clean, producing carbon dioxide and water. Propane doesn't burn as cleanly and commercialy available propane is a mixture of gases, with mercaptans added for odor detection. Gasoline vehicles cannot easily be converted to run on either. The entire fuel system, including tank, pump, lines and injectors must be replaced with new parts. It could cost anywhere between $5,000 and $8,000 (US).
81567
Yes, you can make methane gas from any decomposing organinc material.  With methane gas you can generate power, fuel cars, etc.  We should be making lots of it.
913828
It sounds extremely unlikely.  In fact, so unlikely that I would rate it as impossible.  The problem is that the first stage of the reaction would be the splitting of one of the C---H bonds in methane and you would need pretty brutal reaction conditions to achieve this, e.g. temperatures well in excess of 1000°C.  At these temperatures, hydrocarbons such as octane are unstable and simply would not form.  If there is any reaction at all, I would guess that, at fairly high temperatures you would get some acetylene, e.g. by passing a stream of methane over a bed of red-hot carbon :\nC(s)   +   CH4(g)   --->   2 C2H2(g)\n\nNote that the equation you wrote is balanced.  But just because you have a balanced equation, that doesn't mean the reaction is feasible.
367405
Most gas water heaters can be converted to propane. In many locations, the local propane dealer has the know-how to do this or can tell who in your area does.\n\nBecause propane has more energy per cubic foot, it requires more air. Conversely you need less propane for the air available at your burner.
339003
Methane can be removed by low temperature gas distillation.  The cost may not be worth it.
505346
CH4 Methane and CO2 carbon dioxide.  Only the methane is combustable.  In addition, to the two gases above, you may also have some H2S (rotten egg smell) and H2O vapor depending on how bad it smells and how wet it is.  Enjoy!
321248
Yes.  The methane and hydrogen, the main ingredients, are flamable.  The perfect circumstances?  That's a tough one.  Perhaps if you were a bit stoned so that it would be humorous?
264077
Right off the bat without looking up anything, I would say CH4 has the lowest boiling point.  Why?  Well, it is the least complex molecule of them all.  Additionally, it is symmetric, therefore non polar.  Since it is the smallest and least complex, it really doesn't have a dipole-dipole interaction such as the other larger molecules, requiring either a lot more pressure to cause condensation or a removal of a lot of heat to really bring it to a low temperature.  Furthermore, there isn't any entanglements when two or more molecules collide, which the larger hydrocarbons are prone to because they have comparatively longer chains.
113299
A unique feature of propane is that it is not produced for its own sake, but is a by-product of two other processes, natural gas processing and petroleum refining.\nPropane is removed from natural gas to prevent it from liquidifying and causung problems in natural gas supply lines.\nWhen crude oil is processed into gasoline and other products, some propane is also formed as a by-product.
262111
Natural gas is too hard to Compress, so, it is collected straight from the ground and pumped to homes. When a Gas field is found they just use a pipe like they do oil to tap into the Gas pocket. Butane is a gas that can be compressed it liquefies under pressure, that why a Lighter looks like it has Liquid in it, you CAN NOT do this with natural gas. This a easy way to explain it.
322532
No, water (H2O) and Gasoline [mostly Octane] (C8H18) are quite different on a molecular level,\nFor one, water has no carbon, and Octane has no Oxygen.
1150337
propane is 4.2 pounds per gallon as a liquid
918968
(See answer to very similar question at the second source listed below)\n\nAssuming ideal gas behavior, we have that the molar density (moles per unit volume) of a gas is given by:\n\nmolar density = n/V = P/(R*T)\n\nwhere R is the gas constant = 62.363 (liter*torr)/(mol*K) -see source\nP is the pressure\nT is the absolute temperature\n\nTo convert from molar density to mass density (mass per unit volume) we simply multiply by the molecular mass of the material in question. In this case, the molecular mass of propane is 44.1. \n\nPutting all this together, and plugging in values:\n\nmass density = (44.1 gm/mol)*(874 torr)/((62.363 liter*torr/mol*K)* (273.15+95)K)\n\nmass density = 1.679 gm/liter = 1.679e-3 gm/cm^3
562353
pure butane is neutral for sure. And butane, no matter isobutane or just butane, is alkane. Alkane does not dissolve in water since no ionic bond exists in the compound, so measuring its pH does not make much sense.\n\nCarbon and hydrogen have very similar electronegativity, so it's very difficult to remove hydrogen from the carbon chain. It's pka value is around 50.
192284
http://energy21.freeservers.com/bookrep.html  Want to know something else? I've found a way to convert gasoline into Propane! And it can never be marketed! All Engines from 1996 on up must run at an Air to Fuel Ratio of 14.7 Parts of Air to 1 Part of Fuel! My System goes 100 to 1 Air to Fuel Ratio, but it will never happen! You want something interesting to Research ? This is it!
905654
Propane is higher.  It's because C3H8 has a higher density than CH4.  There's a formula in "Perry's Chemical Engineer's Handbook" that lets you estimate the heat value of a hydrocarbon fuel, based on its density, which I don't have available right now...however, the following should be useful:\n\nhttp://cta.ornl.gov/bedb/appendix_a/Heat_Content_for_Various_Fuels.xls
577412
Oh wow. Is that your experiment or what? Honestly, I don't think it's possible to convert carbon dioxide from a gaseous phase to solid phase by adding water followed by freezing.\n\nCO2 (g) + high pressure -> CO2 (s)\n\nYou need to have a high presure machine that would compact the CO2 molecules so tightly they bind the molecules together and become solid.\n\nCO2 + extremely low temperature -> CO2 (s)\n\nEither that (the abovementioned) or you gotta use very, very low temperatures to bring down the energy level in the CO2 molecules so much so that they only vibrate in position instead of bouncing all over.\n\nEither way, I see neither method stamped with a DIY. And what's this thing about carbon power concept? \n\nAnyway, I hope my answer has helped you to a certain extent c",) Happy Chemistry-ing!!!