I can't see the picture properly so can you make zoomed in pictures for me?
Don't understand the text, but water always freezes at 0°C as long as its water.
Sorry man, this isn’t really my cup of tea
Answer:

Explanation:
Hello there!
In this case, since the heat of fusion is a property that allows us to calculate the heat involved during the change from solid to liquid (fusion) and is calculated as shown below:

In such a way, given the heat involved during this process and the mass of copper, we calculate the heat of fusion as shown below:

Or in kJ/mol:

Regards!