A0.10 kg piece of copper at an initial temperature of 95°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°c. what is the final temperature of the system when it reaches equilibrium? show your work.

(cp of Copper = 387J / kg times degrees C; cp of Aluminum = 899 J / kg times degrees C; cp of Water = 4186J / kg times degrees C)
 Use the law of conservation of energy and assuming no heat loss to the surroundings, then 
 Heat given up by copper = heat absorbed by water + heat absorbed by calorimeter 
 Working formula is 
 Q = heat = MCp(delta T) 
 where 
 M = mass of the substance 
 Cp = specific heat of the substance 
 delta T = change in temperature 
 Heat given up by copper = 0.10(387)(95 - T) 
 Heat absorbed by water = 0.20(4186)(T - 15) 
 Heat absorbed by calorimeter = 0.28(899)(T - 15) 
 where 
 T = final temperature of the system 
 Substituting appropriate values, 

 0.10(387)(95 - T) = 0.20(4186)(T - 15) + 0.28(899)(T - 15) 
 38.7(95 - T) = 1088.92(T - 15) 
 3676.50 - 38.7T = 1088.92T - 16333.8 
 1127.62T = 20010.3 
 T = 17.75 C 

Texture and composition are different because they are not the same aspect. texture has to do with feel and so on, where as composition is the chemical makeup which you cant touch like you can texture.

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