Calculate the mass in grams of 0.0035 mol of NaNO3

The Mass in Grams= 0.5145

Explanation:

The atomic mass of Na=23

The atomic mass of No3= 62

we multiply 0.0035×((23×1)+(62×2)) = 0.5145 grams

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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