Separate the redox reaction into its component half‑reactions.
O2+4Cu⟶2Cu2O Use the symbol e− for an electron.I found the Oxidation half reaction: Cu ---> Cu^+ + e^-Reduction half reaction: O2 +4e^- > 2O^2-
i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)
narendra modi is currently the pm of india
the product of the pressure and volume is also constant