A or B or C or D, fassst plzzz

What was the procedure by which case united states vs lopez went to court

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?