La parafina es organica o inorganica

Se consideran dos materiales de cambio de fase (PCM), uno es PCM organico (cera de parafina) y el otro es inorgánico (sal hidratada).

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.

може ли да зареждате повече информация, моля