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Topic: Heat Lost = Heat Gained; Finding Final Temperature  (Read 2033 times)

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Offline babyrecept107

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Heat Lost = Heat Gained; Finding Final Temperature
« on: October 04, 2011, 03:09:22 PM »
Okay, I've been trying to figure out this question for almost a week now.

A constant temperature bath containing 5.00 L of water at 70.0 C was cooled by adding 0.500 kg of ice. Find the final temperature.

My confusion stems from the fact that there is no initial temperature for the ice. Do I assume that the ice is at 0 C and goes through a phase change? Do I use Q1 + Q2 = 0? HELP PLEASE.
« Last Edit: October 04, 2011, 03:39:59 PM by babyrecept107 »

Offline jusy1

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Re: Heat Lost = Heat Gained; Finding Final Temperature
« Reply #1 on: October 05, 2011, 05:56:09 AM »
Yes I think you have to assume that. And your equation is right too.

Offline babyrecept107

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Re: Heat Lost = Heat Gained; Finding Final Temperature
« Reply #2 on: October 05, 2011, 03:29:55 PM »
I figured it out today. You assume that the ice is at 0 C and goes through a phase change, then you use the equation:

 :delta: H + Qice = Qwater

Thank you  :)

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