Calculate the change in internal energy for a gas using the first law of thermodynamics. The gas transfers 485 J of energy as heat to the surroundings.
Pext = 1.01 x 105 Pa
V1 = 2.30 L
V2 = 2.05 L
For a gas, the internal energy (ΔE or ΔU) of a system can be calculated from the heat and work of the system.
The relationship between internal energy, heat, and work is shown in the following equation:
ΔE = internal energy, J
q = heat, J
w = work, J
To solve for Internal Energy, we have to: