I have a question about my Thermodynamics homework.(adsbygoogle = window.adsbygoogle || []).push({});

In an insulated container, [itex]0.50 kg[/itex] of water at [itex]80^\circ C[/itex] is mixed with [itex]0.050 kg[/itex] of ice at [itex]-5.0^\circ C[/itex]. After a while, all the ice melts, leaving only the water. Find the final temperature [itex]T_f[/itex] of the water. The freezing point of water is [itex]0^\circ C[/itex]

I need to find all the [itex]Q[/itex]'s and set their sum to equal 0.

I have the Q for the water, Q for the ice, Q from fusion. [itex]T_f[/itex] is the same for all the substances. But my answer is still off.

[itex]Q_{H_2 0}= 0.5 kg c_{H_2 0} ( T_f-80^\circ C )[/itex]

[itex]Q_{ice}= 0.05 kg c_{ice} (T_f+5^\circ C)[/itex]

[itex]Q_{f}= 0.05 kg L_f[/itex]

Is there another Q I haven't accounted for?

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# Homework Help: Thermodynamics quick Question

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