posted by Claire .
What mass of electrons would be required to just neutralize the charge of 1.4 of protons?
**1.4 grams of protons
Look up the mass of one proton (and one electron).
mass proton x # protons = 1.4 grams. Solve for # protons.
#protons = # electrons.
# electrons x mass 1 electron = mass electrons.
It can be done another way with reasoning.
We know that a proton is about 1833x more massive than an electron; therefore, 1.4 g/1833 = about 0.00076g. See if you get that answer with the calculation above.