You know vapor pressure in the room, volume of the room, temperature of the vapor. So figure the moles of mercury vapor in the room
PV=nRT solve for n, then convert it to mass.
A student breaks a thermometer and spills most of the mercury (Hg) onto the floor of a laboratory that measures 15.2 m long, 6.6 m wide, and 2.4 m high. (a) Calculate the mass of mercury vapor (in grams) in the room at 20 degrees celcius. The vapor pressure of mercury at 20 degrees celcius is 1.7x10^-6 atm.
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