5. A block of aluminum metal weighing 50.0 g was heated to 100.00°C. Then it was immersed in 200 g of water, which was initially at 25.00°C. The final temperature of the overall system was 28.86°C. What is the heat (thermal energy) capacity of aluminum per gram and per mole? Treat the aluminum block as one thermal energy reservoir and the water bath as another. Make a sketch of the essentials of the overall system. One ans: heat capacity = 24.5 J/K mol.

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5. A block of aluminum metal weighing 50.0 g was heated to 100.00°C. Then
it was immersed in 200 g of water, which was initially at 25.00°C. The
final temperature of the overall system was 28.86°C. What is the heat
(thermal energy) capacity of aluminum per gram and per mole? Treat the
aluminum block as one thermal energy reservoir and the water bath as
another. Make a sketch of the essentials of the overall system. One ans:
heat capacity = 24.5 J/K mol.
Transcribed Image Text:5. A block of aluminum metal weighing 50.0 g was heated to 100.00°C. Then it was immersed in 200 g of water, which was initially at 25.00°C. The final temperature of the overall system was 28.86°C. What is the heat (thermal energy) capacity of aluminum per gram and per mole? Treat the aluminum block as one thermal energy reservoir and the water bath as another. Make a sketch of the essentials of the overall system. One ans: heat capacity = 24.5 J/K mol.
EA Ch 2 Question 5. Regard the aluminum block and the water bath each as thermal energy reservoirs (see equation #2.5 on p.7
and related discussion). No other energy reservoirs are part of the problem. A sketch is shown below. Al is 27.0 g/mol.
Heat capacity per gram:
CAI =
J/(g-K)
Heat capacity per mol:
CAI =
J/(mol-K)
Transcribed Image Text:EA Ch 2 Question 5. Regard the aluminum block and the water bath each as thermal energy reservoirs (see equation #2.5 on p.7 and related discussion). No other energy reservoirs are part of the problem. A sketch is shown below. Al is 27.0 g/mol. Heat capacity per gram: CAI = J/(g-K) Heat capacity per mol: CAI = J/(mol-K)
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