What is the density of an object with a mass of 2 g & a volume of 8 ml ?

Iam in desperate need of with this !

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)

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?