Calculate the amount of energy required to melt a 48.9g sample of cobalt at its normal melting point. Boiling point = 3097oC ? Hvap = 389 kJ/mol melting point = 1495oC ? Hfus = 15.5 kJ/mol specific heat solid = 0.418 J/goC specific heat liquid = 0.686 J/goC

Calculate the amount of energy required to melt a 48.9g sample of cobalt at its normal melting point. Boiling point = 3097oC ? Hvap = 389 kJ/mol melting point = 1495oC ? Hfus = 15.5 kJ/mol specific heat solid = 0.418 J/goC specific heat liquid = 0.686 J/goC

Calculate the amount of energy required to melt a 48.9g sample of cobalt at its normal melting point.
Boiling point = 3097oC ? Hvap = 389 kJ/mol
melting point = 1495oC ? Hfus = 15.5 kJ/mol
specific heat solid = 0.418 J/goC specific heat liquid = 0.686 J/goC




a. 12.9 kJ
b. 18.7 kJ
c. 20.5 kJ
d. 323 kJ
e. 759 kJ



Answer: A