The diagram shows four states of a system, each with different internal energy, E. (c) Write an expression for the difference in energy between State C and State D.

Video transcript

Hey everyone, we're asked to consider the following diagram that illustrates different states of a system derive an expression for the change in internal energy between state B and state D. Now looking at our diagram essentially, they want us to find an expression for this section right here, from B to D. Now looking at our diagram, we can see that the change in energy too is between B and C. And we can also see that the change in energy five is between C&D. So this essentially means that the change in energy between B and D Will have to be the change in energy of 2 - the change in energy of five. And this is going to be our final answer. Now, I hope that made sense and let us know if you have any questions.