Answer:
[tex]C\text{ : -5,155 J}[/tex]Explanation:
Here, we want to get the change in the internal energy of the system
Mathematically, according to the 1st law of thermodynamics, we have it that:
[tex]\Delta E\text{ = Q - W}[/tex]where:
Q = 2,500 J
W = +7,655 J
W is positive since work is done by the system
Substituting the values into the equation above, we have it that:
[tex]\begin{gathered} \Delta E\text{ = 2500 - 7655} \\ \Delta E\text{ = -5,155 J} \end{gathered}[/tex]