Is there any mnemonic to answer redox reaction problem?​

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?

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

What is the lowest number energy level where a d sublevel is found