Define if the freezing point of mercury is -38.8°C and is the only metal that is liquid at room temperature. Explain what quantity of heat energy, in joules, must be released by mercury if 1.80 mL of mercury is cooled from 23.0°C to -38.8°C also then frozen to a solid? The density of liquid mercury is 13.6 g/cm3 and its specific heat capacity is 0.140 J/g•K and its heat of fusion is 11.4 J/g.