*** 2 fold dilution *** 1. The problem statement, all variables and given/known data I have a mouthwash bottle with 0.05% of sodium fluoride (it says on the back) What i am tying to do is get 6 different concentrations? idk, I am helping my brother with an experiment: THere are 6 glasses with soda, and cookies. in there also is a a whole egg. I want to put different concentrations of the mouthwassh inside the 6 glases. the experiment is if different concentrations of mouthwash inside theglass with cookies soda and the egg, will make the egg dirtier or cleaner. ex( more mouthwash = more cleaner) so how do i make different concentrations?