Asked by Y0gi

25) A 75-g ice cube at 0 C is placed in 825g of water at 25 C. a) What is the final temperature of the mixture? b) If the final temperature is 0 C, then how much ice remains?
c) change the ice's mass to 300g, and repeat the problem

I don't know how to work this at all!!! PLEASE HELP!
Answered by drwls
Go through the numbers and you should find that there is enough energy in the water to melt all of the 75 g of ice, but not 300 g of ice.

In the 75 g case, after all the ice is melted, the remaining heat in the water gets transferred to the melted ice, resulting in a final temperature between 0 and 25 C.

In the second (300 g of ice) case, not all of the ice melts. Calculate how much heat is lost cooling the water to 0 C, and see how much of the ice can be melted in the process.
Answered by Y0gi
How do you find the final temperature of the mixture though?
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