How many grams of cao must react in order to liberate 525kj of heat?

What is the chemical formula of the following compound

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?

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?