Determine the molecular formula of a compound with an empirical formula of NH2 and a formula mass of 64 g/mol. a-
N3H8
b-
NH3
c-
N4H8
d-
N2H8
e-
none of these

Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.

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

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