Please help with this chemistry question

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?

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

Can someone me with 1 to 4 plz. fast