What is the molarity of a .25 liter solution containing 52 grams of hbr?

Iknow #2 is d. i just need to know why

Describe the interaction that occurs between two objects with the same electrical charge.

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)