Final answer:
The subject of this question is Chemistry, and the answer is Gibbs free energy.
Step-by-step explanation:
The subject of this question is Chemistry and it is at the High School level.
.
The equation given is the Gibbs free energy equation, which relates the change in Gibbs free energy (ΔG) to the change in standard Gibbs free energy (ΔG°), temperature (T), and the natural logarithm of the reaction quotient (Q).
.
The answer to the multiple choice question is A) Gibbs free energy.