hey everyone, im a chemistry student and i am currently working on my final year project, which is to find a chemical difference between canned and bottled coke. one of the aspects im looking at is CO2 content, so i need a way of measuring the quantity of CO2 in a container. ideally i want to do this before it has been opened, to reduce the chances of gas escaping unmeasured, and so i thught the best way might be to measure the internal pressure of the container and calculate CO2 content from there. so far ive thought of testing the force required to deform the container a certain amount, and then creating a standard to check that against by inflating empty cans to known pressures and testing them in the same way. the down side is that i dont think i have the equipment for it. since this is a little out of my field, i figured it would be better to ask engineers for advice, so what do you guys think? ideally any way that i do this would use as simple equipment as possible, since im not sure how much access ill be able to get to any engineering labs.