Answer:
The change in internal energy (∆U) of the balloon is -465.7 units. The negative sign indicates that the internal energy of the balloon has decreased.
Step-by-step explanation:
To find the change in internal energy of the balloon, we can use the First Law of Thermodynamics, which states:
Change in internal energy (∆U) = Heat added (Q) - Work done by the system (W)
Given:
Heat added (Q) = 97.3 units
Work done by the system (W) = 563 units
Now, let's plug in the values:
∆U = 97.3 - 563
∆U = -465.7
Therefore, the change in internal energy (∆U) of the balloon is -465.7 units. The negative sign indicates that the internal energy of the balloon has decreased.