The can is an average-sized aluminum can and the zombies are The Walking Dead-style zombiesSeveral factors have to be further analyzed and explained in this question for me to come to a truthful and decisive answer. Mainly, what kind of zombies are we talking about here? I Am Legend zombies or Dawn of the Dead zombies? How big is the can? Is it aluminium or plastic?
I'd give a rough estimate and say eight based on the information provided.
I'm 12 too, at least for the next few days, and I could fight off 60. If I can do it, you can too!I should say about five. I am 12, for God's sake!
I do have quite a high willpower, though. I would probably spray all the soda over the zombies and then, when they are blinded, punch the hay out of them.