What causes light to appear "bent" when it refracts

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

If i add water to oil what will happen