Question #cd962

1 Answer
Jul 5, 2017

Answer:

#2.326xx 10^-23# #"g"#

Explanation:

I'll assume you meant a nitride ion...

We're asked to find the mass, in #"g"#, of one nitride ion, #"N"^(3-)#.

This is simply a charged nitrogen atom, which has gained three electrons from bonding. Recall that electrons have negligible mass compared to nucleons (protons and neutrons). This, the atomic mass of a nitride ion is essentially the same as the mass of a lone nitrogen atom.

According to a periodic table, the relative atomic mass of #"N"# is

#color(red)(14.007# #color(red)("amu"#

One atomic mass unit is #~~ 1.660 xx 10^-24# grams, so let's use dimensional analysis to find the mass in grams of a nitride ion:

#14.007cancel("amu")((1.660xx10^-24color(white)(l)"g")/(1cancel("amu"))) = color(blue)(2.326 xx 10^-23# #color(blue)("g"#