What is the question? maybe I can help
Answer:
The only parameter that changes is mass m
It is only necessary to calculate the ratio Eh/Ee

The kinetic energy of the heavy paricle is three times the kinetic energy of an electron
If each lightbulb is identical they should have approximately the same resistance therefore the voltage would be split equally so the Voltage over each light bulb would be 3V.
Unsaturated solution. It has more capacity to hold more solute.