Question

A can of carbonated beverage typically holds about 354mL of fluid. How do you compare this to the volume of an empty stomach?

Answer 1

A can of carbonated beverage has `177/2000`'ths the volume of a maximally extended stomach.

Explanation:

In adult's, a relaxed stomach generally holds up to 75 mL, which is much less then the can. However, the stomach is elastic, or distenisble, which means it can expand to comfortably fit 1-2 litres of food in it. Translating those litres into milliletres, and we find that the stomach can hold 1000-2000mL of food. Already this is 2.5-6 times more volume then the can of beverage.
https://www.quora.com/What-is-the-maximum-capacity-for-the-stomach-of-an-average-human-How-much-food-can-the-stomach-store

https://hypertextbook.com/facts/2000/JonathanCheng.shtml

https://en.wikipedia.org/wiki/Stomach#Structure

However, this is only the comfortable expansion of the stomach. In reality, the stomach mucles can expand enough to fit 4 litres of food! Naturally this rarely ever happens since feeling-full hormones are sent to the brain long before, but if it did happen, the stomach would be capable of holding 4000 mL of food, which is more than 11x the volume of the canned beverage.
https://www.reference.com/science/capacity-human-stomach-f49894825d7034bf

http://www.science.ca/askascientist/viewquestion.php?qID=513

To put that into fractions, we divide the can's volume by the stomach's maximum volume, which is
`354/4000`
`=177/2000`, therefore the can of carbonated beverage, when compared to a fully distended stomach, holds only `177/2000`'s of the volume.

I hope I helped!