Calculate the molality of a 20. 0% by mass ammonium sulfate (nh4)2so4 solution. The density of the solution is 1. 117 g/ml.

answer:

i havent taken the psat, but i have the sat, make sure to bring some snacks, because youre in there forever, 2 sharp number two pencils, an sat approved calculator, and maybe a jacket.   your phone and any books will be taken up, so don't try to bring them(but they will be given back at the end of the testing).   good luck!   i hope you do well!