What kind of attraction pulls electrons close to the atomic nucleus?
The electric force pulls electrons close to the atomic nucleus. The protons in the nucleus have a positive charge, and so attract the negatively charged electrons.
93.2 ml + 3920 ml = 4013 ml total
(93.2 ml) * (2.03 m) / (4013 ml) = 0.0471 m
the volume in in l of the diluted solution would be 0.0471 m.
Yes it would be a physical change.