One example of a thermal conductor

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

Apush or pull that moves or changes and object when to objects touch

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %