When does a precipitate form?

In which phase(s) do the molecules take the shape of the container?

Define a is a tiny pavket of energy

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