Question

Pb+O2-> Na+O2->Al+O2->Ca+O2->Cu+O2->Si+O2->P+O2->S(IV)+O2->​

Answer 1

2Pb+O2=2PbO

4Na+O2=2Na2O

4Al+3O2=2Al2O3

2Ca+O2=2CaO

2Cu+O2=2CuO

Si+O2=SiO2

4P+5O2=2P2O5

S+O2=SO2

Answer 2

It seems like you've written a sequence of chemical reactions involving various elements reacting with oxygen (O2). However, the reactions you've provided are not balanced equations, and they do not form a complete reaction pathway. The final product "S(IV) + O2" is also not specified properly. Additionally, some reactions are not chemically feasible as they violate basic rules of chemistry.

If you have a specific set of reactions or a particular chemical reaction you'd like to understand or balance, please provide more information or let me know what you need assistance with, and I'll be glad to help!