Question 10
a 75.0 −ml sample of 1.54×10−2 m na2so4(aq) is added to 75.0 ml of 1.22×10−2 m ca(no3)2(aq).
part a
what percentage of the ca2+ remains unprecipitated?
express your answer using two significant figures.

Chlorine and water react to form hydrogen chloride and oxygen, like this: 2cl2 (g) + 2h2o (g) → 4hcl (g) + o2 (g) also, a chemist finds that at a certain temperature the equilibrium mixture of chlorine, water, hydrogen chloride, and oxygen has the following composition: compound concentration at equilibrium cl2 0.55m h2o 0.57m hcl 0.53m o2 0.34m calculate the value of the equilibrium constant kc for this reaction. round your answer to 2 significant digits.