Asolution may contain ag. pb, and hg, ions. upon the addition of 6 m hcl, a white precipitate forms. the precipitate partially dissolves when heated in a hot water bath. the supernatant and the precipitate are separated into two test tubes. the decanted liquid yields a bright yellow precipitate when drops of acidified k. cr, are added. the remaining white precipitate turns greyish when 6 mnh, is added to it. which ions are present, absent, or still in question?

b.final

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72

answer seismograph;

the pseudoscience are like beliefs, theories, or like practices that are considered scientific