Which balanced equation represents an oxidation-reduction reaction?
(1) bacl2 + na2so4==> baso4 + 2nacl
(2) c+h2o ==> co + h2
(3) caco3==> cao + co2
(4) mg(oh)2 + 2hno3==> mg(no3)2 + 2h2o

Which of these reactions are redox reactions? check all that apply.cd + hcl → cdcl2  + h2cucl2  + na2s → 2nacl + cuscaco3  → cao + co2          2zns + 3o2  → 2zno + 2so2          ch4  + 2o2  → co2  + 2h2o

Which statement best describes the he properties of iconic compounds ?

Which property of water causes water drops to bead on a freshly waxed car?