We did a titration in class with 0.1M NaOH as the titrant and 0.7M HCl as the analyte. The titration had an initial biuret reading of 0.00 mL and a final biuret
reading of 12.40 mL, using phenolphthalein as an indicator.
What volume of acid was used?

Show all work and include units. Answer should be rounded to correct significant
figures.

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!

if you need further assistance, let me know: )

~ trueboss72

idk what is it? is this a question that you know the answer or u dont