Which of these statements are true? Select all that apply.

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

Answer asap need by wednesday morning calculate the ph of 0.036m naoh best answer will be brainliest

The biosphere of the earth is made up of what compound? organic or inorganic?