Homework Help: Physics

Posted by teamjakeward on Sunday, February 15, 2009 at 11:21am.

i'm really lost here. please show me how to solve this

A 0.10 kg piece of copper at an initial temperature of 94 degrees C is dropped into 0.20 kg of water contained in a 0.28 kg aluminum calorimeter. The water and calorimeter are initially at 15 degrees C. What is the final temperature of the system when it reacher equilimbirum?
(Cp of Copper = 387J/kg * degC; Cp of Aluminum = 899 J/kg * degC; Cp of Water = 4186J/kg * degC)

thanks for any help

Physics - bobpursley, Sunday, February 15, 2009 at 1:04pm
The sum of the heats gained in a closed system is zero.

masswater*cw*(Tf-Tiwater)+masscopper*Cc*(Tf-Ticopper)+massAl*Calum*(Tf-Tialum)=0

Put the numbers in, solve for Tf.
Physics - teamjakeward, Sunday, February 15, 2009 at 1:22pm
ok thanks :)

Answer this Question

Related Questions

Science - 1. How much heat energy is lost by 3 kg of water when it cools from 80...
physics - please check these; a container of gas is at pressure of 3.7*10^3 Pa. ...
physics - please check these; a container of gas is at pressure of 3.7*10^3 Pa. ...
physics - A 0.10 kg piece of copper at an initial temperature of 95degC is ...
Physics-PLEASE ANSWER, it's due soon! - A copper calorimeter can with mass 0...
physics - a 2.00kg copper plate with an initial temperature of 20.0 degrees ...
physics - A copper calorimeter can with mass 0.202 kg contains 0.185 kg of water...
Help me!, Physics - A 60g piece of ice at an intial temperature that is unknown...
Physics - A copper calorimeter can with mass .100 kg contains .160 kg of water ...
physics - A copper calorimeter can with mass .100 kg contains .160 kg of water ...

For Further Reading

First Name:
School Subject:
Answer: