A special soap claims that it gets your hands cleaner than other soaps, Bob thinks that if he washes his hands with the special soap, they will be cleaner
than when he uses a regular soap. What is Bob doing?

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

50.23 i believe is correct but don't quote me on that.