Why is oxygen less soluble in water as temperature of the water increases ?
Are there any elements that are like this too?
If you look at their solubilities, other gases also become less soluble as the temperature increases
http://www.engineeringtoolbox.com/gases-solubility-water-d_1148.html
The solubility of a gas in water is given by Henry's law
p=Kc
where p= partial pressure of the gas above the water, c=concentration and K is a tmperature dependant constant, i.e. varies with temperaure.
see
http://www.800mainstreet.com/9/0009-006-henry.html