In the molecular formula 4Al(OH)₃ - the number "4" is the and it tells you 1.Coefficient; how many atoms of aluminum there are
2.Coefficient; how many molecules of Aluminum hydroxide there are
3.Subscript; how many atoms of aluminum there are
4.Subscript; how many molecules of aluminum hydroxide there ar

2.coefficient how many molecules of Aluminum hydroxide there are

im pretty sure its b

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.