If 30mg of iodine 131 is given to a patient, how much is left after 32 days? The half life of iodine 131 is 8 days.

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?

Acetylene gas c2h2 undergoes combustion to produce carbon dioxide and water vapor how many grams of water are produced by the same amount of c2h2?

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?