Question

1)Nh3=3h2+?+q
2) MgO+HCl-?+H2
3)Al+HCl-?+h2
4)Al+s-?

Answer 1

2NH3=3H2+N2+Q
MgO+2HCl=MgCl2+H2O
2Al+6HCl=2AlCl3+3H2
2Al+3S=Al2S3