Calculate the mass percent of a solution that is composed of 8.00 g NaNO3 dissolved in 35.0 g of water.

Solution :

The mass percent of NaNO₃ is 18.60% .

To Find :

The mass percent of a solution that is composed of 8.00 g NaNO3 dissolved in 35.0 g of water.

Solution :

Mass percentage is given as :

Therefore, the mass percentage of NaNO₃ is 18.60% .

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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