While mercury is very useful in barometers, mercury vapor is toxic. Given that mercury has a heat of vaporization of 56.9 kJ/mol and its normal boiling point is 356.7 °C, calculate the vapor pressure in mm Hg at room temperature, 25 °C.
A. 4.29 X 10^-3 mm Hg <----this is the right answer but I don't understand how to solve the problem and get that answer.
B. 2.36 mm Hg
C. 62.8 mm Hg
D. 751 mm Hg
If someone could guide me in the right direction on how to solve this problem I would appreciate it.