Which one of these samples contains the smallest number of molecule? A) 1.0L of H2 at STP(0c and 1atm)
B) 1.0L of N2 at STP.
C) 1.0 L of H2at 20 c and 760 torr.
D) 1.0L of N2 at 0c and 800 torr.
E) 1.0 L of He at STP

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.