4. When an aqueous solution suspected of containing Ba2+ or Pb2+ or both is mixed with sulfuric acid a precipitate forms. In another test, when the original solution is mixed with an
aqueous solution of sodium sulfide no precipitate forms. What do these two tests indicate
about the likely presence of Ba2+ and Pb 2+ in the original solution? Explain your answer.

is it a purebred? it looks more like a red nose, but it doesn't have the red could it be a staffordshire bull terrior? unsure if that's the right name for it sorry

cock topography

the study of the surface of a large voluptuous cock.

look at that sorostitute right she's a cock topographer!

what classes are you taking this

cock topography!

the correct answer would be d. hope this !

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )