15. The radioisotope xenon-133 has a half-life of 5.2 days. How much of an 80 gram sample would be left after 20.8 days? Please show work. *

16. Most of the larger elements on the periodic table were created through the process of artificial transmutation. Describe this process and give an example. *

17. In general, alpha particles tend to be less penetrating than other types of radiation. What are two reasons for this? In what circumstance can it be more damaging? *

0.09 moles of sodium sulfate in 12 ml of solution

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted