xplain practical problems..
2007-05-19 06:39:23 · 5 answers · asked by dineshbabu 2 in Science & Mathematics ➔ Chemistry
No.
The closest "we" have been able to go is a few tenths ot 1degree or so. Atleast I think that was where it was.
The practical problems are that 0 Kelvin is a null energy state...in short, there is *no* energy in the sample being chilled! Even intersellar space is hovering around 3 Kelvin!
2007-05-19 06:48:25 · answer #1 · answered by jcurrieii 7 · 0⤊ 0⤋
No, it is a theoretical temperature. The best way to visualize or understand this is the following. The ideal gas law states that PV = nRT. So, if we set the temperature to 0 K, we get that PV = 0. No matter how small an atom is, it will always have a volume. Since we are dealing with an ideal gas, even at 0 K, it must have a pressure tha is nonzero, thus, the 0 K temperature is impossible to reach. Furthermore, from the kinetic molecular theory of gases, Ek = 3/2RT. If T = 0 K, we are saying that a molecule or atom can have a Ek = 0, again impossible. Electrons never stop moving around the nucleus, so any atom or molecule must have a positive value of kinetic energy. So, as a consequence, 0 K can never be achieved experimentally.
2007-05-19 15:54:22 · answer #2 · answered by William Q 5 · 0⤊ 0⤋
No,
Like everyone else kinda said, 0 Kelvin would be the result of an absence of all energy, meaning it would create a perfect vacuum, which is thus far impossible to create in the world of science. As volume of a gas decreases, temperature decreases. Once you theoretically hit 0 Kelvin, you have no volume left, thus it creates a perfect vacuum.
My teacher explained to me that Kelvin temperatures are mostly used in equations dealing with STP of a gas because you don't have any negative numbers to work with, and in most chemical equations, negative numbers become hassles... and work out to answers that are physically impossible, because you can't really have negative volume or pressue. At the moment, I can't remember the exact chemical equations he was talking about, or I would give you an example.
2007-05-19 16:10:37 · answer #3 · answered by neversaydie 1 · 0⤊ 0⤋
Nope. 0 kelvin = 0 energy
If you get 0 energy, you make all particles stop.
If there is no motion, then, you can say that the time has stopped there... Is it possible to stop time?!
2007-05-19 15:58:35 · answer #4 · answered by Sega 2 · 0⤊ 0⤋
nope, dats what i hear from my teacher, no scientist has ever reach o kelvin
2007-05-19 13:47:41 · answer #5 · answered by Anonymous · 0⤊ 0⤋