Wow, thank you. That made it embarrassingly easy. It'd be answer "c" then.
I suppose that's the effects of cramming.
Thanks, especially for the quick reply!
The following is a multiple choice question on a previous quiz I was given:
Homework Statement
Ions of type A with a charge of +2e and a mass of 4 amu (atomic mass units) and ions of type B
with a charge of +3e and a mass of 20 amu are at rest on one side of a cell wall. Both pass...