What are the purposes of a chemical equation? What are the purposes of a chemical equation? Check all that apply.

to show how substances in a chemical reaction interact
to shorten the explanation of a chemical reaction
to make chemical reactions easier to recognize
to help keep track of atoms in a chemical reaction
to show just the products of a chemical reaction

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

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante