Not sure what you are asking. I have two possible answers though...
It could either be more negatively charged, or valence electrons.
The more away from the nucleus a electron is, the more negatively charged it is.
The electrons on the outermost electron shell is valence electrons.
Again, I don't know what you were asking, but one of these answers may be correct.
You can use a graduated cylinder.
The Photo Isn't Clear At All.
Answer:
D
Explanation:
the H2O2 under go reduction to remove O2 and then forms water
