Given the balanced equation representing a reaction:
mg(s) + ni2+(aq) ==> mg2+(aq) + ni(s)
what is the total number of moles of electrons lost by mg(s) when 2.0 moles of electrons are gained by ni2+(aq)?
(1) 1.0 mol (3) 3.0 mol
(2) 2.0 mol (4) 4.0 mol

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .

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)