I’m going with a liter/litre because I’m as inclusive as Hell. I can convert it to a 12oz can on my own. Anyway, I’m not belching after a soft drink as I used to, but I’m passing more abdominal gas. Much more. I assume much of the gas is what I didn’t belch because it isn’t all that stinky, like the CO2 just passed through cleanly, but there’s an awful lot of it. So, how much can I blame on a sub-Trumpian amount of Diet Coke and how much can I credit to my friendly bacteria?
There is a fairly in-depth discussion here:
Basically 2.2 grams of CO2 per 12 ounce soda can. Volume, pressure, etc. are all in the link.
There are moles in Diet Coke? But moles are poisonous! And not listed in the ingredients. However, I’ve seen how foamy my dog’s mouth got when he tried to eat one, and it explains why Diet Coke tastes so nasty. :eek:
Ignorance fought! 
OK, so dropzone obviously isn’t being completely serious, but there’s a chance that he really doesn’t know what “moles” mean in this context. In chemistry, amounts of various substances are often measured in moles, which fundamentally, is just a count of the number of molecules or atoms or ions or whatever you have. But in typical situations, the number of molecules would be a very, very large number, so we don’t count them directly: We use a number-unit, similar to a dozen. Just as a dozen is twelve of something, a mole is 6.02*10^23 of something (this number is chosen such that a mole of the lightest atom, hydrogen, weighs one gram). The number of moles of any given substance, then, is usually a much more manageable number than the number of molecules or whatever. Measuring substances in this way is useful for chemistry, because it makes chemical reactions clearer: For instance, water has two hydrogen atoms for every one oxygen atom, so if you react two moles of hydrogen with one mole of oxygen, you won’t have any of either left over. And it’s especially useful for gases, because (at any given pressure and temperature), the same volume of gas will contain the same number of moles, no matter what substance or mixture of substances the gas is made of (at typical temperatures and pressures humans are comfortable in, a mole of gas takes up about a cubic foot).
Just for completeness sake, that 2.2 grams of carbon dioxide will have a volume of a little over a liter at STP.
BELCH!!!
I’m guessing that soda is pretty comparable to beer in terms of CO2 solubility, and soda is generally a lot fizzier than beer. Considering that most mass-market lager is carbonated with roughly 2.5-3.0 volumes of CO2 (i.e. 1 liter of beer contains 2.5-3.0 liters of dissolved CO2), I’m guessing that most sodas are probably in the 3.5-5.0 volumes of CO2 ballpark.
For ideal gases. We generally work with gases that are very close to ideal, but aren’t exactly, and if you get the pressure high enough, they’ll be less and less ideal.