Which statement accurately describes ci2? a. it is an atom. b. it is a mixture. c. it is an isotope. d. it is a molecule. which statement accurately classifies helium? a. it is an atom. b. it is a mixture. c. it is a molecule. d. it is a compound.

How much heat is required to convert 0.3 kg of ice at 0°c to water at the same temperature

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.

What are the dimensions of the cross section that passes through the points a, f, g, and d?