Okay, science peeps, help me out. I want to do a gas laws lab, and this xkcd strip got me thinking about the 2.2 grams of CO2. It isn’t cited, as Mr. Munroe is usually so careful to do, so I don’t know where it comes from. I want to know how much CO2 is in a can of pop.
Here’s the train of thought:
I’m thinking we can use Boyle’s Law (P1V1 = P2V2) to find the pressure inside the can. Open can, catch all gas, fill space in can with water.
P1Vfill-defizzed-pop-can-with-water = PatmosphereVcatch-escaping-gas-somehow-measure-it
Take newly generated P and calculated V, use with Ideal Gas Law:
PcalcVinside-can = (n)(R)Tmeasured
How is this idea? Is it double-dipping on data? Doable? Feedback, please!
Sources of error will probably be fun, but I’m okay with students finding those.
Wonder if we’ll get something close to 2 grams.
Could compare can to plastic bottle, different kinds of pop…