Mystical Riddles 1 Snow Mountain Hotel walkthrough

In the haunted hotel, you'll find hidden objects and adventure games!
New free to play hidden puzzles, brain teasers and mini-games of Mystical Riddles: Snowy Peak Hotel where you need to seek and find objects and win top new point &click adventure relaxing games! This game has no plot differences with the original puzzle, and its main feature is that you can play the entire hidden objects quest for free!
Your friend, journalist Kate Turner, has an important task: she is to solve the mysteries of the Snowy Peak hotel. Missing guests, terrified staff, ghosts, a suspicious hotel owner… Something isn’t right. The thing is that no one likes curious journalists, especially if they have something to hide. Kate goes missing. You are to find your friend and reveal the secrets of the haunted hotel along the way. Unfortunately, the truth is hidden somewhere beyond this world, so you may need all your knowledge of the supernatural. Are you sure you can handle this? Then… What are you waiting for?

[@blumoon54]

I do not understand the mixing chemicals part. Like omg