Which half-reaction correctly describes an oxidation? ca(s)+2e- ca2+(aq) br2+2e- 2br- na+(aq) (s) +e- cr(+(aq) + 3e-

If two atoms are bonded to a central atom with no lone pairs, how will they be arranged

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

Sulfuric acid is a polyprotic acid. write balanced chemical equations for the sequence of reactions that sulfuric acid can undergo when it's dissolved in water.