The First Law of Thermodynamics, also known as the Law of Conservation of Energy, states that energy cannot be created or destroyed, only transferred or converted from one form to another.
The First Law of Thermodynamics can be applied to thermodynamic systems by considering the energy input, output, and change in internal energy of the system.
A common problem involving the First Law of Thermodynamics is calculating the change in internal energy of a system when given the energy input and output.
The First Law of Thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system. In other words, the first law relates the transfer of energy as heat and work to the change in internal energy of a system.
The First Law of Thermodynamics sets a limit on the efficiency of energy conversion processes. This means that not all of the energy input can be converted into useful work, and some energy will be lost as heat.