If 2.000x10^3 kJ of heat is transfered to 2.500 kg of solid pentane (C5H12) at -173.0 degrees C, determine the final temperature (K). The melting point and boiling point of pentane is -130.0 degrees C and 36.0 degrees C, respectively. The heats of fusion and vaporization are 15.5 kJ/mol and 26.5 kJ/mol, respectively. The heat capacities of the three phases (s, l, g) are, in Joules/(g K): 1.31, 2.33, and 1.77.