The First Law of Thermodynamics states that ?U = Q - W, where ?U is the change i

Question

The First Law of Thermodynamics states that ?U = Q - W, where ?U is the change in internal energy, Q is the heat flowing into the system and W is the work done by the system. There are four different processes discussed in Section 15.4 of the text. These processes are referred to as isobaric, isochoric (or isovolumetric), isothermal and adiabatic. Each process allows one to simplify or modify the First Law. Which of the processes are related to which of the following simplifications?

Isobaric, Isochoric, Isothermal, Adiabatic  W = P?V, where P is constant.
Isobaric, Isochoric, Isothermal, Adiabatic  ?U = 0 J
Isobaric, Isochoric, Isothermal, Adiabatic  W = 0 J
Isobaric, Isochoric, Isothermal, Adiabatic  Q = 0 J (so ?U = -W)

Explanation / Answer

isobaric

isothermal

isochoric

adiabatic

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