The value of specific heat for copper is 390 J/kg ° C for aluminum is 900 J/kg °
ID: 1783486 • Letter: T
Question
The value of specific heat for copper is 390 J/kg°C for aluminum is 900 J/kg°C and for water is 4186 J/kg°C. What will be the equilibrium temperature one of 235 g block of copper at 255°C is placed in a 145 g aluminum calorimeter cup containing 875 g of water at 14°C? The value of specific heat for copper is 390 J/kg°C for aluminum is 900 J/kg°C and for water is 4186 J/kg°C. What will be the equilibrium temperature one of 235 g block of copper at 255°C is placed in a 145 g aluminum calorimeter cup containing 875 g of water at 14°C?Explanation / Answer
Solution- The equality of final and initial heats can be expressed from basic equation for final (f) state of an N-component mixture expresses
So the formula is-
(mfcf)Tf = (i=1,N)(miciTi)
(0.235*390 + 0.145*900 + 0.875*4186)Tf = 0.235*390*255 + 0.145*900*14 + 0.875*4186*14
Equilibirium Temperature, Tf = 76476.25/3884.9
= 19.68 0C
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