Girl, Life, Moving Forward - Page 2

I am an analytical chemist so dilutions are pretty much my life and I can tell you that the chemistry answer to this problem is if you dilute the chemical an infinite number of times you will eventually have no chemical left. It doesn't matter if you always leave 1oz in the flask. Eventually you will dilute the solution to where you have 1 molecule of your chemical left and then that molecule will get tossed out and you will have pure water. (assuming perfect mixture every time, and assuming the chemical doesn't stick to the flask etc...) And actually it won't even take that long to get a pure water solution. Assuming that you get a perfect mixture every time and that you throw out exactly half of your chemical every time, and for calculation's sake let's say that you have 1 mole of chemical (instead of 1 oz just so we can get a precise number to make the calculation easier) it looks like you will get pure water on your 81st rinse, assuming when there is only one molecule left it gets discarded with the rinse and does not stay in the flask.