Ajewellery melts 500g of silver to pour into a mould. calculate how much energy was released as the silver solidified.

When silver is poured into the mould the it will solidify

In this process the phase of the Silver block will change from liquid to solid.

This phase change will lead to release in heat and this heat is known as latent heat of fusion.

The formula to find the latent heat of fusion is given as

here given that

now we can find the heat released

So it will release total heat of 55.5 kJ when it will solidify

d.7.5cm is your answer