High School

The value of \(\Delta E\) for a system that performs 151 kJ of work on its surroundings and loses 79 kJ of heat is ________ kJ.

Group of answer choices:
A) 230
B) 151
C) 72
D) -72
E) -230

Answer :

Final answer:

The value of δE for the system is -230 kJ. Option a is correct.

Explanation:

The value of δE for a system can be calculated using the first law of thermodynamics, which states that δE = Q - W, where δE is the change in internal energy of the system, Q is the heat transfer, and W is the work done on or by the system. In this case, the system performs 151 kJ of work on its surroundings, and loses 79 kJ of heat. So, the δE for the system is calculated as follows:

δE = Q - W = -79 kJ - 151 kJ = -230 kJ

Therefore, the value of δE for the system is -230 kJ.

Learn more about Thermodynamics here:

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