The table below shows the boiling points of some of the gases found in air.
-----Gas*******Boiling point (。C )
---Argon******* -186 。C--------
----Nitrogen***** -196。C-------
----Neon******* -246。C
----Oxygen***** -183。C
----Xenon****** -109。C
--Carbon dioxide*** -78。C
--Helium****** -269。C
--Kypton****** -153。C
List the gases which would still be gaseous at -200。C
F4 Chem easy question
2010-04-17 5:42 pm
回答 (1)
2010-04-17 6:23 pm
✔ 最佳答案
A substance would be gases if it is at a temperature higher than its boiling point under such pressure. In other words, the substance would be gases if its boiling point is lower than the temperature at this moment.The boiling points of neon (b.p. -246ºC) and helium (b.p. -269ºC) lie below -200ºC.
Therefore, neon and helium would still be gases at -200ºC.
參考: wanszeto
收錄日期: 2021-04-19 21:56:08
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