The half-life of a reactive chemical is 20 milliseconds. If you start with 1.76 grams, how much is left after 80 milliseconds?​

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances

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?

Calculate the number of molecules present in 0.750 mol of mgo.