Question

Помогите пожааалуйста

Answer 1

4P+5O2=2P2O5

P2O5+3H2O=2H3PO4

2)2CU+O2=2CUO

CUO+2HCL=CUCL2+H2O

CUCL2+2KOH=CU(OH)2 +2KCL

3)2CA+O2=2CAO

CAO+H2O=CA(OH)2

4)S+O2=SO2

SO2+H2O=H2SO3