How much heat is needed to melt 1.25 kg of water at its melting point?
Use the delta H fusion equation.
For this particular problem, we are not dealing with a temperature change, rather, we are dealing with a scenario in which we are melting ice. Hence, we need to use the delta H fusion equation:
You need to look up the
With this in mind, plug in the values, remembering that
Now, type this in your calculator, and you will get your answer in kJ.
With significant figures, you will get:
I hope that helps!