find molecules of N2 by reacting .0024gNa3N using the following equation (stoichiometry)?

Question

6CuCl(aq) + 2Na3N(aq) yields 2Cu3N(s) +6 NaCl (aq) + N2(g) I don't think this equation is balanced to begin with and I am even having trouble with that! Please show conversion steps.

Answer 1

Molar mass Na3N = 82.98 g/mol
Moles NaN3 = 0.0024 g/ 82.98 = 2.89 x 10^-5
the ratio between NaN3 and N2 is 2 :1
Moles N2 = 2.89 x 10^-5 / 2 = 0.0000145
Molecules N2 = 0.0000145 x 6.02 x 10^23 = 8.71 x 10^18

Answer 2

You have a problem with the eqtn. It indicates that N( with an oxidation number of -3) is oxidized to the elemental form (oxidation numbre of 0), but nothing is reduced to cause this to happen. If you had CuCl2, you could pull it off.