Please help me it’s due today at 5:20pm please help me will mark the brainiest please help me

Element before carbon on the periodic table

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

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)