Agas balloon has a volume of 126.0 liters when the temperature is 75.0 celsius and the pressure is 760.0 mm of mercury. what will it's volume be at 60.0 celsius and 790.0 mm of mercury pressure?

i think it is true since you can test the answer and can use observations to complete it.

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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