SO2(g) + NO2(g) + SO3(g) + NO (9) For the equilibrium system described by this
equation, what will happen if SO3 is removed?
The equilibrium shifts to the left or right?

false

because it does not have the potential to be entirely used up

the answer would be c

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.