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-

Which statement describes how phase changes can be diagrammed as a substance is heated? the phase is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the phase is on the x-axis. the time is on the y-axis and the temperature is on the x-axis. the temperature is on the y-axis and the time is on the x-axis.

In a spacecraft, the following reaction occurs: co2(g) + 2lioh(s) -> lico3(s) + h2o(i) (i attached picture of equation) how many liters of carbon dioxide will 4 moles of lithium hydroxide (lioh) absorb? (one mole of any gads occupies 22.4 l under certain conditions of temperature and pressure. assume those conditions for this equation.) 45l 6.0l 3.0l 34l

Can someone me with questions 12 and 13 plz.