Answer:
How many of them are state functions? 4 (option e.)
Explanation:
Thermodynamic is related to the energy transformation. We can say, that is a change of energy from one form to another form.
A state function is a property of a thermodynamic system and this system, only depends on that state, not on the way the system has reached it.
Heat (q) and work (w) are not state functions, since their value depends on the type of transformation that a system undergoes. You have an initial state and a final state.
This are the state functions:
E - Internal Energy
H - Enthalpy
S - Entropy
G - Gibbs Energy
