5. Dadas as duas semi-reações a seguir determine corretamente a reação global. 2 H2O > 2 H+ + 2 OH-
2 OH- > H2O + ½ O2 + 2 e-

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

a) the particles of the chair are strongly held together.