Agaseous sample of pure methane, ch4, is found to occupy a volume of 20.0 l at 25℃ and 1 atm pressure. what volume of o2, at the same temperature and pressure, should be just sufficient to permit complete combustion of the methane?

10.0 l
20.0 l
30.0 l
40.0 l
none of the above is correct.

beta decay is the answer

all eukaryotic cell have mitochondria : )

it is the most commonly accepted one

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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