What is the chemical equation that is made when you digest something? Pleaseee I need help:(

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

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)