In this lab, you will do experiments to identify types of changes. Using the question format you learned
(shown above), write an investigative question that
you can answer by doing these experiments.

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