Which property of water causes sugar to dissolve in coffee

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

Which of the following units is not an official si unit

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation