The state of matter than has the least internal kinetic energy
(the kinetic energy of all the internal particles
relative to the center of mass of the system),
or the least internal + macrosopic kinetic energy,
is the same state as
"Which state of matter has the least thermal energy?".
(hint: it's not the gaseous state).
However, if you are asking what state of matter has the least macroscopic kinetic energy:
Every state of matter can have systems with zero macroscopic kinetic energy.
So none of them (or perhaps all of them) have the "least" kinetic energy.
Network solid
Each side of the equation is divided by the number of moles
The total number of gas molecules will decrease.
Total = 2.60 atm. 2.60-.350atm(He)-.350atm(Ar) = 1.8 atm Xe
2m
Detergents help water wash way greasy dirt.