where g = number of states. 
. 
where 
= debye temperature. Then
use pressure in vapor =energy in gas/vol to get 
Vapor pressure changes
by a factor of 2/10 degrees celsius. 
.
where g = number of states. . where = debye temperature. Then
use pressure in vapor =energy in gas/vol to get Vapor pressure changes
by a factor of 2/10 degrees celsius. .