1. The problem statement, all variables and given/known data A 50.0 g ball of copper has a net charge of 2.00µC. What fraction of the copper’s electrons has been removed? (Each copper atom has 29 protons, and copper has an atomic mass of 63.5.) 2. Relevant equations 1.00 C× (1proton)/(1.60×10^−19C)=6.25×10^18 protons C = coloumb, the SI unit of charge 3. The attempt at a solution I don't know where to begin. I haven't taken Chemistry in a long time so I'm pretty stumped.