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

1 Answer
Jun 17, 2017

Answer:

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............."#