28 mL of 0.36 mol/L acetic acid is titrated with a standardized 0.43 mol/L KOH solution. Calculate the pH of the solution after 21 mL of the KOH solution has been added. Assume the Ka of acetic acids is 1.8 x 10^-5.

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.

it's c (engineer's do their work with mechanical stuff not on any living being)

the pseudoscience are like beliefs, theories, or like practices that are considered scientific