How many moles are present in 450 grams of sodium phosphide, Na3PNa3P? a. 450 moles
Selected:b. 99.9 moles
c. 44,995 moles
d. 4.50 moles

4.5moles

Explanation:

Given parameters:

Mass of Na₃P = ?

Unknown:

Number of moles  = ?

Solution;

The number of moles in a given substance can be derived from the expression below;

    Number of moles =  

Molar mass of  Na₃P   = 3(23) + 31 = 100g/mol

   Number of moles  =   = 4.5moles

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

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.