A sample of gas y occupies 500 L at the pressure of 80 KPa. after changing the volume of the sample the pressure of it is 400 KPa what is the new volume of the gas?

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.

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