If the amount of adams if each type on the left and right sides of a reaction difference what must be done to balance it

Hey there,

Your answer would be

Coefficients are placed in front of the reactants and/or products

Hope this helps,

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.