Carbonated drinks, like sparkling water, are made by dissolving carbon dioxide gas into a liquid. How would stirring, temperature, and surface area impact the rate at which these kinds of drinks can be produced? Please help, I'm really stuck on this question..

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.

answerca air mass;

yes the answer is total mass in unchanged   : )