Homework Help: Chemistry. Please help!!

Posted by JJ on Friday, March 2, 2012 at 4:15pm.

Calculate the final temperature when a 18.7 gram sample of ice at 0 degrees C is placed into a styrofoam cup containing 113 grams of water at 71.6 degrees C. Assume that there is no loss or gain of heat from the surroundings.

Heat of fusion of ice = 333 Jg^-1
Specific heat of water = 4.184 JK^-1g^-1
a.) Final temperature = ________ degrees C

b.) Calculate the entropy change that occurs during this process.
Entropy change = ________ JK^-1

Please show and explain because I tried doing it but I messed up some distributions and I can't get the right answer.

Chemistry. Please help!! - DrBob222, Friday, March 2, 2012 at 4:51pm
heat absorbed by ice + heat absorbed by water from melted ice at zero C + heat lost by warm water = 0

[mass ice x heat fusion] + [mass melted ice x specific heat water x (Tfinal-Tinitial)] + [mass warm water x specific heat water x (Tfinal-Tinitial)] = 0
Solve for Tfinal, the only unknown in the equation.

Answer this Question

Related Questions

Chem - Calculate the final temperature when a 16.2 gram sample of ice at 0oC is ...
science - a 100.0 gram metal sample is heated to a temperature of 110 degrees ...
chemistry - A 100.0 gram sample of iron at 80.0 degrees Celsius was placed in ...
Chemistry - Calculate the final temperature of a mixture of 350g of ice cubes at...
Physics - A cube of ice is taken from the freezer at -8.5 degrees celsius and ...
Chemistry - A 14.0-g sample of ice at -18.0°C is mixed with 122.0 g of water...
Chemistry - Calculate the final temperature (once the ice has melted) of a ...
Physics - 25) A 75-g ice cube at 0 C is placed in 825g of water at 25 C. a) What...
CHEMISTRY - If 142.38 g of l water at 21.7 degrees C is placed into a syrofoam ...
chemistry - A 2.622 g sample of almond is ignited and used to melt ice in a can...

For Further Reading

First Name:
School Subject:
Answer: