Refer to the activity series chart and determine which of the following displacement reactions can occur.
a.
2ag(s) + zn(no3)2(aq) → 2agno3(aq) + zn(s)
b.
2cu(no3)2(aq) + 2ag(s) → 2agno3(aq) + cu(s)
c.
cuso4(aq) + fe(s) → feso4(aq) + cu(s)
d.
3mgso4(aq) + 2al(s) → al2(so4)3(aq) + 3mg(s)

Explanation for basic character?

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.

How many oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2