e. what is the state of the substance when the time is 13.0 min? he would love to do activities like this during the school year too, perhaps as an after school session. bring the dye bath to a gentle simmer (about 80 degrees c) and then keep at that temperature for about 1 hour, stirring gently from time to time. i think sugar is the better option if you must have a sweet tea, but cut it out all together…it may take you a month or so to get used to the non-sweet taste, but it will be worth it in the long run. 