Li3N(s) ---> Li(s) + N2(g)

Mg(s) + N2(g) ---> Mg3N2(s)

Al(s) + HCl(aq) ---> AlCl3(aq) + H2g)

:D

Thanks in advance

Li_3N(s) --->3Li(s) + \frac 12 N_2(g)

3Mg(s) + N_2(g) ---> Mg_3N_2(s)

Al(s) + 3HCl(aq) ---> AlCl_3(aq) + \frac 32 H_2(g)

These were extremely easy, Did you try to figure them out?

I did, maybe next time I should post with my answer lol.. I did them but wanted to make sure they were right. I am self teaching myself all of this and don't have an aswer key

Sorry about it..
BTW thank so much for taking the time to answer this..
I appreciate it

You can multiply two of the equations by 2 to get small whole numbers. Molecules typically react this way (with small whole numbers). The reason for this is that typically molecules have to collide to react -- especially in the gas phase. The more molecules have to collide to react, the less likely the reaction is to proceed.

Awsome! You are of great help to all of us!
Thank you