What would be the observations when aqueous ammonia is added to a solution of zinc nitrate (until in excess) and heated?

When CuSO_4 is added to a solution of ammonia

What do you observe when ammonium hydroxide is added to the aqueous solution of: Zinc nitrate.

What is observed when excess of ammonia is passed through an aqueous solution of lead nitrate ?

What do you observe when ammonium hydroxide is added to the aqueous solution of:Lead nitrate.

State your observations when hydrochloric acid is added to zinc nitrate solution

What happens when excess of ammonia is added to copper sulfate solution ?

Write your observations when ammonia water is added to copper sulphate solution first a little then in excess. Give balanced equations.

What do you observe when : Sodium hydroxide is added to zinc sulphate solution first in a little then in excess.

What do you observe when ammonium hydroxide is added to the aqueous solution of: ZnSO_4 .

State your observation : When sodium hydroxide is added to magnesium nitrate solution