Question

The 1st Law of Thermodynamics is a statement about (A) Temperatures scales (B) Whether a process can proceed in a specific manner (C) The efficiency of a system (D) Energy conservation (E) None of the above

Answer 1

Energy conservation.

Step-by-step explanation:

The 1st Law of Thermodynamics is a statement about energy conservation. It states that
`\Delta U=Q-W`, which means that if we substract the work W done by the system to the heat Q given to the system we get the change in the internal energy
`\Delta U`, so any excess in energy given to the system appears as internal energy, stating that energy is conserved.