Physical Properties Sample Mass Solubility
(in water)
C 200 g 36 g/mL
D 500 g 180 g/mL

What would best support whether the two samples are of the same substance or not?

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