If 154.9 grams of KOH exactly neutralizes 262 mL of an aqueous HCl solution, what is the concentration of the HCl solution ? A)16.33

B)31.8 M

C)8.62

D)18.22

E)10.54

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)