The change in internal energy of the system is +187 J
Explanation:
According to the first law of thermodynamics, the change in internal energy of a system is given by the equation:
[tex]\Delta U = Q + W[/tex]
where
[tex]\Delta U[/tex] is the change in internal energy
Q is the heat absorbed by the system
W is the work done on the system
For the system in this problem, we have
W = +108 J is the work done on it
Q = +79 J is the hear added to it
So, the change in internal energy is
[tex]\Delta U = 108 + 79 = +187 J[/tex]
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