I am doing this experiment for my class. When I try to do the recrystallization in step 8, the flask disappears without recrystallization being performed.
Be sure that you are dragging the right flask! You should be dragging the flask with the solid compound to the crystallization dish, not the one with the liquid distillate in it.
If that is what you are doing, you may want to check if your lab needs to be updated. To to that, open the organic chemistry lab and click on “About Virtual ChemLab Organic” in the bottom left corner. See the attached screenshot.
You should have product version 22.214.171.124 and database version 1.13
If you don’t, let me know and I’ll guide you how to update.