The specific heat of liquid thallium , Tl, is 0.13 J/g C. The heat of fusion of thallium is 4.29 kJ/mol. The heat of vaporization of thallium is 162.5 kJ/mol. How much heat is required to change 10.0 g of solid thalium at 304 degrees C to vapor at 1457 degrees C ? The melting point of thallium is 304 degrees C. The boiling point of thallium is 1457 degrees C.

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.