You're right, I missed something. Apparently, when dissolved the ions separate and do not bond with the hydrogen and oxygen in the water. So maybe this is more accurate:
1 Rb2SO4 ----> 2 Rb + 1 SO4
So, 1 mole of Rb2SO4 molecule becomes 3 moles of ions, so it's a 1:3 ratio right? If that's true, would I be accurate to write it as such:
0.805 mol 1 Rb2SO4 (3 mol ions / 1 mole 1 Rb2SO4) = 2.42 mol ions