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Aqueous potassium sulfide and aqueous cobalt (ii) chloride are mixed, and a double replacement reaction occurs. what is the correct balanced chemical equation? k2s(aq) + cocl2(aq) yields 2kcl(aq) + cos(s) ks(aq) + cocl(aq) yields kcl(aq) + cos(s) k2s(aq) + co2cl(aq) yields kcl(aq) + co2s (s) k2s(aq) + cocl2 (aq) yields k2co(aq) + scl2 (s)
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