calcule la masa de soda cáustica y de agua necesaria para preparar 8 litros de solución al 15% m/m. la densidad de la solución es 1,4 g/ml.

i can ! i just need to know what the paragraph is! : p

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

it's c (engineer's do their work with mechanical stuff not on any living being)