Question

The specfic heat of iron is 0.11cal/g C. The heat of fusion of iron, the heat required to convert iron from a solid to liquid at its melting point, is 63.7cal/g. Iron melts at 1530 C. How much heat must be added to 2g of iron at 25c to completely melt it?

Answer 1

q1 = heat added to raise T of Fe from 25C to 1530 C.
q1 = mass Fe x specific heat Fe x (Tfinal-Tinitial)

q2 = heat to melt Fe at 1530C.
q2 = mass Fe x heat fusion/g

Total Q = q1 + q2

Answer 2

458.5cal