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Solid Helium is difficult to produce; at normal atmospheric pressure it will not solidify, even at 00 Kelvin. ( aka Absolute zero, or -2730C )
Exactly how cold Helium must be to solidify depends on the pressure it is under. The standard way to show the numbers is on a phase diagram. These can be found on Google. Since we can't put diagrams on Wiki Answers, you will only get one of the possible answers here.
If you cool Helium to 20 K, it will solidify at about 2.5 MPa. This is about 25 atmospheres or a little under 400 p.s.i. 2.5 MPa is close to the lowest pressure at which Helium will solidify.
Note. Helium has more than one isotype; the numbers above are for the common isotope Helium 4.
What else can I help you with?
What is the word equation for liquid helium?
There is no word equation, except that helium will exist as liquid phase in liquid helium
Why do you use helium to super-cool magnets and why not use liquid nitrogen?
Helium is used for cooling magnets because it remains a liquid at very low temperatures, providing efficient cooling for superconducting materials. Liquid nitrogen, while also cold, is not as effective as helium for reaching the extremely low temperatures required to achieve superconductivity in some materials.
When liquid helium is exposed to room temperature it forms a gas Which best explains why this happens?
Liquid helium is very cold, with a boiling point of -268.9°C. When exposed to room temperature (~20°C), the thermal energy causes the liquid helium to rapidly boil and transition into a gas state.
Which is lighter hot or cold helium?
The hot helium, because density is dependent on temperature and the variation is inversely proportional. (All this is only valid at the same pressure, and at the same physical state of matter, either gas or liquid)
Is liquid helium a true substance?
Yes, liquid helium is a true substance. It is the liquid form of the element helium, which is a noble gas. At very low temperatures close to absolute zero, helium gas condenses to form liquid helium, exhibiting unique physical properties and behaviors.
What happens to the liquid as the temperature drops?
Every liquid, with the single exception of liquid helium, will eventually freeze if it gets cold enough. Helium, however, does not freeze.
What makes a good coolant and why?
Liquid helium because it is very cold and not flammable.
What is the word equation for liquid helium?
There is no word equation, except that helium will exist as liquid phase in liquid helium
What is that something really cold?
Liquid helium, it liquefies at -230 to -240 degrees Celsius.
When is helium temperature?
The element helium can exist over a very wide range of temperatures. Helium is notable for having the lowest boiling point of any element. Liquid helium is exceptionally cold.
Why do you use helium to super-cool magnets and why not use liquid nitrogen?
Helium is used for cooling magnets because it remains a liquid at very low temperatures, providing efficient cooling for superconducting materials. Liquid nitrogen, while also cold, is not as effective as helium for reaching the extremely low temperatures required to achieve superconductivity in some materials.
When liquid helium is exposed to room temperature it forms a gas Which best explains why this happens?
Liquid helium is very cold, with a boiling point of -268.9°C. When exposed to room temperature (~20°C), the thermal energy causes the liquid helium to rapidly boil and transition into a gas state.
Which is lighter hot or cold helium?
The hot helium, because density is dependent on temperature and the variation is inversely proportional. (All this is only valid at the same pressure, and at the same physical state of matter, either gas or liquid)
Which types of compounds can exist as solids liquids or gases?
Covalent.Every compound can exist as a solid, liquid, or gas, given the right temperature and pressure. This is also true of every element, with the single exception of helium, which has no solid phase, no matter how cold it is. Helium is unique.
What would happen if you poured liquid helium into liquid nitrogen?
If you pour liquid helium into liquid nitrogen, the helium will not mix with the nitrogen and will instead form separate layers. Helium is lighter than nitrogen and has a lower boiling point, so the helium will tend to float on top of the nitrogen.
Do chlorine generators work in pools with cold water?
Pretty much everything except helium freezes if you get it cold enough (helium remains liquid at normal atmospheric pressure even at absolute zero because of quantum effects).
Is liquid helium a true substance?
Yes, liquid helium is a true substance. It is the liquid form of the element helium, which is a noble gas. At very low temperatures close to absolute zero, helium gas condenses to form liquid helium, exhibiting unique physical properties and behaviors.
