For the following reactions
(a) zn(s) + cu2+(aq) → zn2+(aq) + cu(s)
(b) c12 h22 o11 (s) + 12 o2(g) → 12 co2(g) + 11 h2 o(l)
(i) calculate the standard reaction gibbs energies at 298 k.
(ii) use standard gibbs energies of formation from the data tables to calculate the standard reaction gibbs energies at 298 k. compare these values with those calculated in (i).

c. 75.7

i think that is the right

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.