Answer:
To determine the change in internal energy of the gas, we can use the first law of thermodynamics, which states:
ΔU = Q - W
Where:
- ΔU is the change in internal energy
- Q is the heat added to the system
- W is the work done by the system
Given:
- Q = 1800 J (heat added to the gas)
- W = 855 J (work done by the gas)
Substituting the given values into the equation:
ΔU = 1800 J - 855 J
ΔU = 945 J
So, the change in internal energy of the gas is 945 J. Since heat is added to the system and work is done by the system, the internal energy of the gas increases by 945 J.
