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In a certain process 12,000 calories of Hexane is supplied to the system while the ...
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Physics
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In a certain process 12,000 calories of Hexane is supplied to the system while the system does work \(7500 J\). Find the change in internal energy: Note I cal= \(4.184 J\)
A.
\(57,708 J\)
B.
\(42,708 J\)
C.
\(35,208 J\)
D.
50,208J
Show Answer
Show Explanation
Correct Answer: A
Explanation
Since I calorie \(=4.184 J\)
12,000 calorie \(=(4.184 \times 12,000) J =50.208 Jheat\) supplied \(=\) Work Done
\((\Delta W)+\Delta U\) (Internal Energy)
\(50,208=7500 J +\Delta U\)
\(\Delta U=(50.208-7500) J\)
\(=42708 J\)
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