I am a student of chemistry. Please describe related to physical chemistry.
2007-01-16 07:02:37 · 8 answers · asked by ශාකුන්තල | shaakunthala 3 in Science & Mathematics ➔ Chemistry
I am asking what is the lowest possible temperature that can be obtained PRACTICALLY (it is not zero)?
2007-01-16 07:18:21 · update #1
Like they have said, THEORETICALLY, absolute zero is the lowest temperature attainable. This temperature is defined by the 3rd law of thermodynamics as the temperature at which a perfect, pure crystal has an entropy of zero. It has been conjectured that all molecular movement stops. However, this is another "white rabbit" in science, much the same as a perfect circuit, and total vaccuum, and so on. The lowest temperature we have been able to acheive is around .45 nanoKelvins, which was done using a sodium lattice. Helium freezers are commonly employed in astrochemistry and have a core temp of around 4°K.
2007-01-16 07:52:18 · answer #1 · answered by Ross P 3 · 1⤊ 0⤋
Absolute zero would be represented by a total lack of any motion by molecules. This condition has never been attained by our science. There's good reason to believe that even in the deepest, emptiest regions of space absolute zero has never been reached either. This is because the entire universe is literally filled with the leftover temperature of the Big Bang that created the universe. This temperature is called the cosmic microwave background radiation and is -454 degrees Fahrenheit. The highest temperature that's ever occurred in our universe is believed to be somewhat higher than 1.8^13 degrees Fahrenheit. This happened at the instant of the Big Bang.
2016-05-25 01:59:30 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Theoretically, the lowest posible temperature is 0 Kelvin (-273C). At this point it is believed that the vibrational energy of atoms is reduced to zero and all vibration stops. This point is called "Absolute Zero" as there is no more vibrational energy to lose, and so you can't get any colder.
2007-01-16 07:08:03 · answer #3 · answered by Anican76 2 · 2⤊ 0⤋
The lowest possible temperature anything can be is absolute zero, or 0 degrees Kelvin.
At this temperature there is absolutely no heat.
2007-01-16 07:43:49 · answer #4 · answered by junky 2 · 0⤊ 0⤋
0 kelvin
2007-01-16 07:09:50 · answer #5 · answered by Anonymous · 0⤊ 0⤋
0 kelvins
2007-01-16 07:08:23 · answer #6 · answered by HIMANSHU A 1 · 0⤊ 0⤋
zero
2007-01-16 07:10:08 · answer #7 · answered by Icon 7 · 0⤊ 0⤋
its zero
2007-01-21 03:10:54 · answer #8 · answered by ♫ Music is Love ♥ 6 · 0⤊ 0⤋