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An essential oil is a concentrated, hydrophobic liquid containing volatile compounds from plants or artificially manufactured to replicate such compounds.http://wiki.answers.com/wiki/Plant Essential oils are also known as simply as the "oil of" the plant from which they were extracted, such as oil of clove. An "essential oil" is "essential" in the sense that it carries a distinctive scent, or essence, of the plant. Essential oils do not as a group need to have any specific chemical properties in common, beyond conveying characteristic fragrances.
Essential oils are generally extracted by distillation although they may also be recovered through expression or solvent extraction.
Since they are fairly volatile, they usually have a lower freezing point than water. As such, they can be effectively dried by treating with liquid nitrogen and straining out the frozen water.
It can also be used in a reflux with the oil where the heavier materials including solids and water will remain at the bottom and the volatile oils and nitrogen vapor come out the top. Since nitrogen is far more volatile than the essential oils, it is fairly easy to flash the vapor to condense the oils and draw off the remaining nitrogen as a (very cold) nearly pure gas.
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Can you freeze water using dry ice?
Yes you can, you just need to drop the dry ice into the water and voila, you've got frozen water
How can you get liquid oxygen using liquid nitrogen?
Liquid nitrogen is colder than liquid oxygen. You use the liquid nitrogen to chill the oxygen in the air and liquid oxygen will form. Liquid water and dry Ice (CO2) should also form due to their presence as well, but not in large quantity. WARNING!! High concentrations of oxygen should be considered dangerous. When exposed to a small ignition source, it can cause flammable materials to combust much like an explosion, and will cause normally non flammable materials to burn readily. Human flesh burns better than wood after being exposed to 100% oxygen for a period of time. Please be careful.
Is liquid nitrogen a cryogenic liquid?
Yes, liquid nitrogen is a cryogenic liquid because it exists at extremely low temperatures of -196 degrees Celsius (-321 degrees Fahrenheit) or below. It is commonly used in various applications due to its cryogenic properties.
Is dry ice frozen nitrogen or a solid form of carbon dioxide?
Dry ice is the solid form of carbon dioxide, not frozen nitrogen. When carbon dioxide gas is compressed and cooled, it turns directly into a solid without passing through a liquid phase, resulting in dry ice.
What are the 3 substances experienced at least 2 physical states?
Water,chocolate (liquid,solid),and dry ice (carbon dioxide).
Is liquid nitrogen an oxidizer?
dry ice −56.4 °C and liquid nitrogen is −196 °C
Does liquid nitrogen Sublimate?
Liquid nitrogen is not dry ice. Dry ice is a solid form of carbon dioxide and liquid nitrogen is pure nitrogen in liquid form. Dry ice is frozen nitrogen. Liquid nitrogen is also frozen nitrogen, but is also pressurized. That's why it's in large, steel boxes. Chur.
Can nitrogen gas be used to make dry ice?
Nitrogen in its liquid state is a cryogenic gas aka cryogen.
What is another name poor man's liquid nitrogen refers to?
I've never actually heard this term used. I suppose it might mean either dry ice or a mixture of dry ice and acetone (or dry ice and diethyl ether), dry ice being somewhat easier for most people to obtain than liquid nitrogen.
Can you freeze water using dry ice?
Yes you can, you just need to drop the dry ice into the water and voila, you've got frozen water
How can you get liquid oxygen using liquid nitrogen?
Liquid nitrogen is colder than liquid oxygen. You use the liquid nitrogen to chill the oxygen in the air and liquid oxygen will form. Liquid water and dry Ice (CO2) should also form due to their presence as well, but not in large quantity. WARNING!! High concentrations of oxygen should be considered dangerous. When exposed to a small ignition source, it can cause flammable materials to combust much like an explosion, and will cause normally non flammable materials to burn readily. Human flesh burns better than wood after being exposed to 100% oxygen for a period of time. Please be careful.
If you do not have cold place is there any chemical that helps ice not to melt that fast?
Liquid nitrogen or dry ice perhaps?
How do you freeze a hamburger patty without putting it in a freezer?
You could surround it with dry ice or drop it in liquid nitrogen.
Does a magnet float on dry ice?
No, a magnet does not float on dry ice. Dry ice does not have magnetic properties and cannot support the weight of a magnet like a liquid nitrogen bath could.
Can you freeze liquor with liquid nitrogen?
About the temperature of dry ice. It is the same as putting frozen water (ice) in a glass of water. The temperature of the ice and water will be about equal to the freezing point of water. Alcohol is used because it has a freezing point lower than H2O, if you put dry ice in water everything will freeze.
Is liquid nitrogen a cryogenic liquid?
Yes, liquid nitrogen is a cryogenic liquid because it exists at extremely low temperatures of -196 degrees Celsius (-321 degrees Fahrenheit) or below. It is commonly used in various applications due to its cryogenic properties.
Would dry ice function the same way as liquid nitrogen in the balloon experiment?
No, because dry ice is a solid and you cannot place a solid inside a solid. If it was liquid carbon dioxide (as opposed to dry ice, solid carbon dioxide) then it would behave similarly.
