Calculate the energy change during a phase change

Question

Given the following information for tin, Sn (at 1 atm), calculate the amount of heat in kJ needed (at 1 atm) to melt a 36.7-g sample of solid tin at its normal melting point of 232 °C.

boiling point = 2.27×103 °C	Hvap(2.27×103 °C) = 230 kJ/mol
melting point = 232 °C	Hfus(232 °C) = 7.07 kJ/mol
specific heat liquid = 0.243 J/g°C

Answer In kJ

Answer 1

36.7 g Sn x 1 mol Sn/118.7 g = 0.3092 moles

0.3092 moles x 7.07 kJ/mol = 2.19 kJ (3 sig. figs.)