Determine the energy change involved to convert 16.2 grams of ice to liquid water?

Question

matt101 · Answer

Are there any temperatures involved? Or is it just the state change we're interested in?

anonymous · Answer

There are no temperatures involved. They just want to know how much energy it takes

matt101 · Answer

Ok in that case we need to know the latent heat of fusion for water, which is 336 J/g. This means it takes 336 J of energy to convert 1 g of water from the solid to liquid state. You may be expected to memorize this number or have a chart that tells you.

You have 16.2 g of ice. How much energy do you need to make it all liquid?

anonymous · Answer

I was mistaken actually the Intial and Final temperatures were 0C

matt101 · Answer

That doesn't change anything! 0C is the freezing/melting pointing of water, so at this stage all energy that you put into the system goes towards changing the state rather than increasing the temperature. If there was also a change in temperature involved, we would need to add that energy as well to find the total.