If a particular liquid has a normal boiling point of 338 k and a vapor pressure of 75.0 mmhg at 285 k, determine ∆hvap for the liquid.
i'm pretty sure i need the clausius-clapeyron equation, but i cannot for the life of me figure out how to start or set this equation up. like, i know it's not a super complicated question, but if anyone could explain it step by step, it'd really me for future homework problems. you so much for any ! i truly appreciate it!

In any atom of any element, you will find protons and neutrons in the nucleus of any atom 

The answer to your q the total mass is 73

Van der waals forces are temporary electromagnetic forces established between uncharged atoms. some neutral molecules, when close together, can become temporarily “charged,” as electrons move around the atom. water is a polar molecule, the side of the molecule that the hydrogens bond to being more positive, and the opposite side bound to the lone pairs of electrons being more negative. this means that it participates in dipole-dipole interaction (non-polar exhibits dispersion forces), and it has the capacity for hydrogen bonding.