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charlie95
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If we have 1m3 of methane liquid at 1 atm and -165 degrees, how much will it expand if we vapourize it?
I have heard someone say that it expand with 600 times.
I have heard someone say that it expand with 600 times.
Simon Bridge said:That's intreguing isn't it? How would you go about checking that?
What is the property that relates how much of something you have to the volume it occupies?
Is there something special about the temperature of -165degrees (units?)
Khashishi said:All gases have approximately the same volume per molecule. Use the ideal gas law: PV = nRT.
You'll need to look up the density of liquid methane, then just compare densities. Of course, your answer depends on the temperature and pressure of the gas.
You can answer your own question when you answer the others in my reply. hint: try the second one.charlie95 said:If you want to have methane in liquid at 1 bar, the temperature needs to be below -160 degrees. Thats why a said -165 deg.
So if we for example have 1 liter(1dm3) of methane(liquid), how much volume will it uccupy if it goes from liquid-> gas ?
charlie95 said:I just want to know if you spill 1 liter of methane on the ground( or liquified natural gas) how much will it expand when it goes from liquid to gas? I know that I should try to find the answer myself, but I wouldn't ask if I hadnt tried..!
Did you try googling "density of methane" and such things?charlie95 said:If I read carefully: PV=nRT... and compare density. Where can I find a table that show me the density at different temperatures?
I just want to know if you spill 1 liter of methane on the ground( or liquified natural gas) how much will it expand when it goes from liquid to gas? I know that I should try to find the answer myself, but I wouldn't ask if I hadnt tried..!
Simon Bridge said:Did you try googling "density of methane" and such things?
You need to say what you have tried. From the information suppied to that point, it looked like you may not have realized about density. There are tables of densities for all kinds of substances online.
Of course, if you just spill it on the floor, the gas will eventually expand to fill the whole room, mixing with the air. I suspect that the situation you need is where the liquid is in a cylinder under a piston. The piston is compressed to maintain a constant pressure, The liquid is heated at it's boiling point at constant temperature until it has completely changed state, What is the new volume?
Right?
Or do you just want to know how far a spill will spread?
charlie95 said:-------The liquid is heated at it's boiling point at constant temperature until it has completely changed state, What is the new volume?----- YES.
charlie95 said:-------The liquid is heated at it's boiling point at constant temperature until it has completely changed state, What is the new volume?----- YES.
256bits said:charlie95
At STP ( standard temperature and pressure ) 1 mole of an ideal gas will occupy a volume of 22.4 litres, which comes from the ideal gas law.
To find the volume at different temperatures or pressures you would the same deal gas law. that has already been discussed.
so, assuming that methane behaves as an ideal gas, you want to find the volume of a container that would hold methane gas if it changed state from a liquid.
find the mass of 1 cubic meter of methane and convert that to number of moles of methane, and use PV = nRT.
charlie95 said:I got the Volume t be 624m3.. Is this correct?
V=(26430mol*8,314J/K*mol*288K)/atmos pressure = 624 m3
I assumed that the temperature was 15 degrees.
Methane is produced through natural processes such as decomposition of organic matter by bacteria in wetlands, landfills, and oceans. It can also be produced through human activities, such as the extraction and burning of fossil fuels.
Methane is a potent greenhouse gas and contributes to global warming. It has a higher global warming potential than carbon dioxide, but it has a shorter lifespan in the atmosphere. It also contributes to the formation of smog and can harm human health.
Methane is measured in parts per million (ppm) or parts per billion (ppb) in the atmosphere. It can be measured using various instruments, such as gas chromatographs or infrared analyzers.
Methane expands approximately 160 times its volume when vaporized. This means that 1 cubic meter of liquid methane will expand to 160 cubic meters of gas.
The main sources of methane emissions include natural sources, such as wetlands and geological sources, and human activities, such as agriculture, waste management, and fossil fuel production and use. Livestock, specifically cattle, is a significant contributor to methane emissions through their digestive processes.