Ash remains from an ancient fire pit was discovered to have only 12.5% of the original Carbon-14 it once contained. If the half-life of Carbon-14 is 5,730 years,

how long ago was this pit used? Show or describe how you solved this. *



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)