Question

Help me

Answer 1

1/2K+S--->K2S

2/3Fe3O4+8Al--->4Al2O3+9FeFe

3/4Na+Cl2+H2--->2Na2HCl

4/Cu+2AgNO3+H2--->Cu(HNO3)2+2Ag

Answer 2

4. Cu + 2AgNO3 \(\rightarrow\) 2Ag + Cu(NO3)2

Answer 3

1. K + S -> K2S

4.Cu + 2AgNO3 -> 2Ag + Cu(NO3)2