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 of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.

Pastoral farming is best described as a. a method of raising livestock and moving herds b. an african method of agriculture c. a method of cultivating crops on poor soils d. a common method of desert farming select the best answer from the choices provided a b c d

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions