Determinar el % en masa de una solución que contiene 50 g de carbonato de calcio en 350 g de solución.

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

points

explanation:

explanation:

0.07 g/cm³

1.37 g/cm³