28. 5 l of an unknown gas has a mass of 55. 92 g at stp. What is the identity of the unknown gas?.

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

Why is carbon ideal for making different compounds?

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