A student measures the mass and volume of a substance and calculates its density as 1.40g/mL. the correct, or accepted, value of the density is 1.30g/mL What is the percentage difference of the sudent's meaurement?

distance, luminosity, brightness, radius, chemical composition, and temperature

a) the particles of the chair are strongly held together.

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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