How to determine the product of a chemical reaction?

Question

I have to determine the products of these chemical reactions, but i have to idea how to.
Can someone give me some assistance?

CH4 + O2 ->
S + Cu ->
Mg + HCl ->
Mg + O2 ->
FE(NO3)3 + KOH ->
Cu + Ag(NO3) ->
Na2(CO3) + MgCl ->
CaCl2 + H2O ->

Thanks.

Answer 1

Just combine the so:CH4O2,SCu,MgHCI,MgO2,FEN3O9KOH, CuAgNO3,Na2CO3MgCl,andCaC12H2O im pretty sure these are right but im not completele posotive