Question

Hgo=
Al+ Cl2=
A Cl3 + Cu=
Cu + AgNO3=
Mg+ HCl=

Answer 1

2Al + 3Cl2 = 2AlCl3
2AgNO3 + Cu = Cu(NO3)2 + 2Ag
Mg + 2HCl  = MgCl2 + H2
2HgO = 2Hg + O2

Answer 2

а где Hgo= ?

Answer 3

Hgo= 2Hg+O2