Calculate the charge due to all of the electrons present in 1. 0 ml of pure water. (1 ml of water will contain 3. 3 4 × 1 0 2 2 3. 34×10 22 water molecules).

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!