homework help > physics > physics q&a board > topic: physics...

Q BgQuestion:

      
Novice
Karma Points: 25
Respect (96%):
posted by  jojo5 on 7/22/2009 4:54:49 PM  |  status: Live  |  Earned Karma: 25

Physics

Course Textbook Chapter Problem Needs by
N/A N/A N/A N/A N/A
Question Details:
A 50.0 g ice cube is dropped into 200 g of water in a thermally insulated container. If the water is initially at 25.0 degrees Celsius and ice is at -15.0 degrees Celsius, then what is the final equilibrium temperature?
Tags: Physics
Bonus Point Alert! Earn +8 additional karma points for helping this gold member.

AAnswers:

Answer Question Ask for clarification
Sage
Karma Points: 4,242
posted by MasterChef on 7/22/2009 5:28:32 PM  |  status: Live
Asker's Rating: Helpful   
Response Details:
The ice will gain heat from the water:


The ice will also undergo a phase change which takes energy


 Water must lose an amount of energy


Energy must be conserved. So the heat lost by the water plus the heat gained by the ice plus the phase change must be zero.



We anticipate that the temperature of the water will be lower and the temperature of the ice will be lower (compared to their initial temperatures.

The final temperature of the ice and water are equal so we solve the above expression for Tf





I used the following values:
Please don't forget to Rate!
Answer Question Ask for clarificarion
Ask New Question

Join Cramster's Community

Cramster.com brings together students, educators and subject enthusiasts in an online study community. With around-the-clock expert help and a community of over 100,000 knowledgeable members, you can find the help you need, whenever you need it. Join for free today » How Cramster is different from tutoring »

Need Help In

Useful Links