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This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

What is the molar mass of potassium nitrate, kno3

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