Calculate the standard free energy change as a pair of electrons is transferred from succinate to molecular oxygen in the mitochondrial respiratory chain. oxidant reductant n e∘′(v) fumarate 2h 2e− ⇌ succinate 2 0.03 12o₂ 2h 2e− ⇌ h2o 2 0.82 express your answer to two significant figures and include the appropriate units.

Explanation:

The free-energy equation for a redox reaction is:

Where:

In this case:

So:

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.