8.21

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camrynpatterson3C
Posts: 44
Joined: Fri Sep 29, 2017 7:07 am

8.21

Postby camrynpatterson3C » Sun Jan 28, 2018 11:29 pm

I somehow keep getting the answer wrong to this when I try to find Tf. I thought I just set the two q=mcdeltaT equations together, but I'm getting a wrong answer. Any ideas?

Kyra LeRoy 1E
Posts: 52
Joined: Sat Jul 22, 2017 3:00 am

Re: 8.21

Postby Kyra LeRoy 1E » Mon Jan 29, 2018 1:26 am

Did you set the negative q of copper to the positive q of water? The copper is losing heat so you have to account for that by putting -q.

Chem_Mod
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Joined: Thu Aug 04, 2011 1:53 pm
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Re: 8.21

Postby Chem_Mod » Mon Jan 29, 2018 2:41 pm

In order for us to help you with this question, it's important to show us your work so we can see what you might be doing wrong in the problem. Please post the question and your work.

Kenan Kherallah 2C
Posts: 78
Joined: Fri Sep 28, 2018 12:17 am

Re: 8.21

Postby Kenan Kherallah 2C » Sun Feb 03, 2019 4:48 pm

Make sure to put a negative for the exothermic reaction (this is a common mistake that I usually forget)


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