which rigid cylinder contains the same number of gas molecules at stp as a 4.0 l rigid cylinder containing hydrogen gas (h2) at stp?

basically anything for school but for getting t=into clubs or doing any legal things well it actually depends on what legal thing your doing but definitely not for drinking or going to the club or other things like that.

f |_| ck f |_| ck

explanation:

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!