Can someone PLEASE help??? I only have 2 hours until I have to turn this in; PLEASE don't send links! Show work!

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

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