Answer:
please add more info into your response
Explanation:
Most atoms do not. For those atoms that do not have a full valence shell (which usually would contain eight electrons, except for hydrogen and helium, where it would contain two), something has to change. So nature's tendency toward a full valence shell will lead to one of two things: The gain or loss of electrons.
It should remain constant because of the law of conservation of mass and because the flask is sealed no mass will escape
6+2=115 and its good it took test
(3.5mol)(24.106 g/1mol c6h6) =84.371 g C6H6
