The First Law of Thermodynamics is Described by Which of the Following

Question

The first law of thermodynamics is described by which of the following equations?
A) $\Delta$ E = Q+W
B) $\Delta$ Q = E-W
C) $\Delta$ W = Q-W
D) Both B and C are correct
E) All of the above are correct

Accepted Answer

The first law of thermodynamics, which is a version of the law of conservation of energy, states that the change in the internal energy of a system is equal to the heat added to the system minus the work done by the system. This is correctly represented by the equation ΔE = Q - W, where ΔE is the change in internal energy, Q is the heat added to the system, and W is the work done by the system. The correct representation of this law is not accurately depicted due to the formatting issues in the options, but traditionally, the equation aligns with the concept described in option A.