An curved arrow pointing right. Coke and Diet Coke cans have the same amount of liquid in them. But Diet Coke cans float and regular Coke cans sink. This is because Coke is a denser fluid than ...

Not all Diet Coke cans float. They vary enough that at least some of the "mini" 222 mL cans will sink. Test them! Over time, the acid in the colas will eat through the cans. They're probably good for ...