what is the chemical formula for polyvinyl alcohol plus borax?
The Borax tube with borax weighed 12.4 grams. The empty tube was the same as the empty polyvinyl alcohol tube (6.0 grams). So that means the borax tube must be holding 6.4 grams of borax. To make a 4% solution we need to dissolve the 6.4 grams in enough water to be equal to 4%. We use the same formula as before.