Calculate the vapor pressure of a solution prepared by dissolving 0.500 mol of a non-volatile solute in 275 g of hexane (M = 86.18 g/mol) at 49.6 degrees C. P hexane = 400.0 torr at 49.6 degrees C.
a) 54 torr
b) 154 torr
c) 246 torr
d) 346 torr
e) 400 torr