In a laboratory, 30. J of heat was added to a gas piston assembly as the piston did 75 J of work on its surroundings. Calculate E for this system

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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~ trueboss72

i think its 100

i hope this !

the pseudoscience are like beliefs, theories, or like practices that are considered scientific