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Sagot :
From the first law of Thermodynamic, the change in internal energy of the system is 83 KJ.
What is Internal Energy of a system ?
The Internal energy of a system is the sum of the random distribution of kinetic and potential energies of its atoms or molecules. Internal energy can be increased by
- Heating
- Compression
- Passing of electric current through it.
Looking for the change in internal energy of the system If 71 KJ of heat energy is absorbed by the system and 12 KJ of work is done on the system for a certain process,
From the first law of Thermodynamic,
ΔU = Q + W
Where
- ΔU = Increased in internal energy = ?
- Q = Energy supplied by heating = 71 KJ
- W = Energy supplied by doing work = 12 KJ
Substitute all the parameters into the formula
ΔU = 71 + 12
ΔU = 83 KJ
Therefore, the change in internal energy of the system is 83 KJ.
Learn more about Internal Energy here: https://brainly.com/question/25737117
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