A student dissolved a compound in water and added hydrochloric acid. No precipitate formed. Next, she bubbled into this solution, but again, no precipitate formed. However, when she made the solution basic with ammonia and bubbled in , a precipitate formed. Which of the following are possible as the cation in the compound? a. Ca 2+
b. Cd 2+
c. Mn 2+
d. Ag+

I’d have to say no because without oxygen in the water the fish would all be dead. so if you want to fish for dead fish, pick the ponds with the lowest oxygen concentrations.

The size is 8inches if ur a girl

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -