2mg + o2--> mgo for this unbalanced chemical equation, what is the coefficient for oxygen when the equation is balanced? a. 1 b. 2 c. 3 d. 4

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

im pretty sure its b

the dissolution of polymer can be thermodynamically described in 2 steps.

a corroding iron, if that's one of your choices