A 090 G Sample of Liquid Water Was Introduced into an an Evacuated

Multiple Choice

A 0.90 g sample of liquid water was introduced into an evacuated 2.00 L flask, which was then sealed and heated to 37°C. What percentage, by mass, of the water remained as liquid? [Vapor pressure of water at 37°C = 48.2 torr.]

A) 10%
B) 18%
C) 82%
D) 90%
E) 0%