Mg(s) → Mg²⁺(aq) + 2 e
Ni²⁺(aq) + 2 e → Ni(s)
Hence, 2.0 moles of electrons lost by Mg(s) when 2.0 moles of electrons are gained by Ni²⁺(aq).
a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.
mg(s) + ni2+(aq) ==> mg2+(aq) + ni(s...