* Density is a property of the substance, not the amount. Density is mass per unit volume (grams per cubic centimeter, for example). Coke, whether in a two-liter bottle or a single can, has the same chemical composition. Therefore, its density will be essentially the same.
* Slight Variations: You *might* see a very, very tiny difference in density due to factors like:
* Temperature: Cold coke is slightly denser than warm coke.
* Carbonation: The dissolved carbon dioxide in coke will slightly affect density, though this effect is usually negligible.
In conclusion: While there might be extremely small variations, a two-liter bottle of Coke and a single can of Coke will have practically the same density.