Помогите плизз H3PO4+Na= H2S+Ca= HCl+Na2O= H3PO4+ZnO=

Question

Помогите плизз
H3PO4+Na=
H2S+Ca=
HCl+Na2O=
H3PO4+ZnO=

Answer 1

6Na+2H3PO4=2Na3PO4+3H2
Ca+H2S=CaS+H2
2HCl+Na2O=H2O+2NaCl
2H3PO4+3ZnO=Zn3(PO4)2+3H2O

Answer 2

2H3PO4+6Na-->2Na2Po4+H2
H2S+Ca-->CaS+H2
6HCl+Na2O-->NaCl+H2O
2H3PO4+3Zn-->ZnPO4+3H2О