Questions 52–54 refer to the following graph.
(A) 180 torr
(B) 330 torr
(C) 675 torr
(D) 0.25 atm
(E) None of the above
51 . H 2 O has a higher boiling point than HF because
(A) H 2 O is more polar than HF
(B) H 2 O can form more hydrogen bonds
(C) H 2 O has a higher molecular weight
(D) H 2 O has more atoms
(E) H 2 O does not have a higher boiling point than HF
52 . In what pressure range will the compound sublime?