Question

What are the correct coefficents for Mg(s) + N2 Mg3N2?

Answer 1

You must balance mass and charge....

Explanation:

And if we make magnesium nitride....

`3Mg(s) + N_2(g) stackrel(Delta)rarrMg_3N_2`

...this represents a redox reaction....magnesium is oxidized, and dinitrogen is reduced...

Else it could be made...

`3Mg(s) + 2NH_3(g) stackrel(Delta)rarrMg_3N_2+3H_2`

....magnesium is oxidized, and hydrogen is reduced...