Question

1)P--->P O -->H PO -->Na PO
2 5 3 4 3 4

2)Cl --->HCl --->ZnCl
2 2



Помогитесрочно

Answer 1

4P+5O2=2P2O5
P2O5+3H2O=2H3PO4
H3PO4+3NaOH=Na3PO4+3H2O

Cl+H2=2HCl
2HCl+Zn=ZnCl2+H2