(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

For the problem below I was able to work out part (i) but I am stuck on working out part (ii) I tried using information given but was unsuccessful. Can anyone help me out?

An insulated copper container of mass 0.250 kg contains 0.350 kg water. Both the container and the water are at 25.0 degrees. 0.012 kg ice at 0.0 degrees is added to the container. Eventually the container and contents reach thermal equilibrium at 21.7 degrees.

We know:

Specific Heat of water = 4186 J/Kg Degree

Specific Heat of copper = 387 J/Kg Degree

Latent heat of vaporisation of water = 2.26x10^6 J/Kg

(i) What is the total heat released (in J) by the copper container and the 0.350 kg water as they cool down from 25.0 degress to 21.7 degrees?

(ii) Determine the latent heat of fusion of ice.

2. Relevant equations

Q=mc[itex]\Delta[/itex]T

Q=mL

3. The attempt at a solution

(i) What is the total heat released (in J) by the copper container and the 0.350 kg water as they cool down from 25.0 degress to 21.7 degrees?

Qw=0.350x4186x(25-21.7) = 4835J

Qcopper = 0.250x387x(25-21.7) = 319J

QT=Qw+Qc = 4835+319 = 5154J

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# Homework Help: Determining latent heat of fusion of ice

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