Gaseous helium atoms must be cooled to 4.2 K before He liquefies. For elements, this is the lowest liquefaction temperature. Based upon our understanding of gas behavior, explain what is unique about He causing it to liquefy at such a low temperature.

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.      

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l