An automobile achieves a gas mileage of 24.5 mi/gal. how many kilometers can it travel on 1.5 l of gasoline?

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

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2