One method of preparing elemental mercury involves roasting cinnabar (HgS) in quicklime (CaO) at 600 ⁰C followed by condensation of the mercury vapor. Given the heat of vaporization of mercury at 296 J/g and the vapor pressure of mercury at 25.0 ⁰C (2.56 x 10⁻³ torr), what is the vapor pressure of the condensed mercury at 300 ⁰C ? How many atoms of mercury are present in the mercury vapor at 300 ⁰C if the reaction is conducted in a closed 15.0 L container?