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Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

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