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Using the given problem in the picture. Solve for: (answer no.3 question, choose from the choices given).   i) the final equilibrium temperature of the metal bar and the water in K* ii) the entropy change considering both metal and water* iii) What does the process considering metal and water implies?*   a. Since ΔSuniverse>0, the process is reversible   b. The entropy change of metal is positive and is thus considered reversible   c. The entropy change of water is negative and is thus considered irreversible   d. ΔSuniverse<0, thus, the process is irreversible

Using the given problem in the picture. Solve for: (answer no.3 question, choose from the choices given).   i) the final equilibrium temperature of the metal bar and the water in K* ii) the entropy change considering both metal and water* iii) What does the process considering metal and water implies?*   a. Since ΔSuniverse>0, the process is reversible   b. The entropy change of metal is positive and is thus considered reversible   c. The entropy change of water is negative and is thus considered irreversible   d. ΔSuniverse<0, thus, the process is irreversible

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Using the given problem in the picture. Solve for: (answer no.3 question, choose from the choices given).
 
i) the final equilibrium temperature of the metal bar and the water in K*
ii) the entropy change considering both metal and water*
iii) What does the process considering metal and water implies?*
  a. Since ΔSuniverse>0, the process is reversible
  b. The entropy change of metal is positive and is thus considered reversible
  c. The entropy change of water is negative and is thus considered irreversible
  d. ΔSuniverse<0, thus, the process is irreversible
21-30. A 1-1b bar initially at 783K is removed from an oven and quenched by immersing it in a closed tank containing 30-lb of water initially at 294K. Each substance can be modeled as incompressible. An appropriate constant specific heat value for the water is c = 4.187 kJ/kg-K and an appropriate value for the metal is cm = 0.419 kJ/kg-K. Heat transfer from the tank contents can be neglected. Determine:
Transcribed Image Text:21-30. A 1-1b bar initially at 783K is removed from an oven and quenched by immersing it in a closed tank containing 30-lb of water initially at 294K. Each substance can be modeled as incompressible. An appropriate constant specific heat value for the water is c = 4.187 kJ/kg-K and an appropriate value for the metal is cm = 0.419 kJ/kg-K. Heat transfer from the tank contents can be neglected. Determine:
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