The Alchamist's Cabin

Your distant relative, a seculuded alchamist, has recenlty passed away. As his closest surviving family, you have inherited his cabbin and all the secrets within... I had some trouble making the stacking puzzle work, it works best stacking from the top down. The symbol/maths puzzle might be a little tricky. Theres a hint button included on the sheet, which will give you the full answer on the thrid hint.