How many electrons are associated with a 4.2*g mass of nitride anion?

1 Answer
Jun 17, 2017

Well in one mole of nitride anion.........there are 1.44xx10^24 "electrons."

Explanation:

Well in one formula unit of "nitride anion.........", there are 3xx7+3=24*"electrons".

And in "one mole" of anything there are 6.022xx10^23 individual items, or there are 6.022xx10^23*"particles"*mol^-1.

"Moles of nitride anion"=(4.2*g)/(42.03*g*mol^-1)=1.0xx10^-1*mol.

And thus "number of electrons.................."

=1xx10^-1*molxx24*"electrons"xx6.022xx10^23*mol^-1

=1.45xx10^24*"electrons............."