Find the difference in entropy between a cup of water and a cup of ice for each of these cases:(adsbygoogle = window.adsbygoogle || []).push({});

1. both are at T=0C

2. ice is at T=0C water is at 20C

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

If the "water" is at 0C then it is ice right? and the difference in entropy is 0 correct?

For the second part... do you think I am supposed to find the Q for each one? since the equation for Q is Q=cmT I don't think this would make sense because the equation for entropy (S) is S=Q/T. For ice it would be 0/0 and you can't do that....

Do you think maybe he's asking for the change in entropy if you mix the two together?

Thanks.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

EDIT

I just remembered the equation is Q=cmdeltaT

So this must mean that he does want to know the change of entropy in the system if you mix the two together??

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Find the difference in entropy between a cup of water and a cup of ice

**Physics Forums | Science Articles, Homework Help, Discussion**