During a chemical reaction, methane (CH,) and oxygen (0.) combine to produce carbon dioxide (CO) and water (H2O). The
balanced chemical equation identifies the reactants and products for
this reaction along with some of their masses. What mass (in grams)
of oxygen (O2) is required for this reaction to occur?
A.16
B. 36
C.44
D. 64

what is the question?

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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