Question

Help me!)
C6H6 + O2=
PH3 + O2=
C2H4 = O2=
Cu(II)S + O2=

Answer 1

.С2H4 + 3O2 = 2CO2↑ + 2H2O .
.2C6H6 + 15O2 = 12CO2↑ + 6H2O.
.2CuS + 3O2 = 2CuO + 2SO2.
.2PH3 + 4O2 = 2P2O5 + 3H2O.

Answer 2

1) 2C6H6+15O2=12CO2+6H2O
2) 2PH3+4O2=P2O5+3H2O
3)C2H4+3O2=2CO2+2H2O
4)CuS+O2=CuO+SO