Identify whether the atom or ion in each equation shows oxidation or reduction. Cu2 e− → Cu Cu2 is Fe → Fe3 3e−Fe is F e− → F−F− is 2l− → l2 2e−l− is 2H 2e− → H2H is.

i believe it is 40–40–20%

explanation:

i belive it is water

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.