- #1

- 61

- 3

## Homework Statement

Given that aluminium has a specific heat of 0.9KJ/KgK, a melting point of 660 degrees Celsius and a latent heat of fusion of 390KJ/Kg, calculate the heat energy required to melt a 10Kg ingot, starting from a room temperature of 20 degrees Celsius.

## Homework Equations

dQ= m c dt

q=Lm m

## The Attempt at a Solution

(10)(0.9)(640)=5760KJ

I get a different answer using the latent heat equation, so which should be used for working out the heat energy for melting and why are both specific and latent heat given, if not as a redherring?