Chemistry

Problem

The reaction

2\,\mathrm{Al} + 3\,\mathrm{Cu^{2+}} \rightarrow 2\,\mathrm{Al^{3+}} + 3\,\mathrm{Cu}

occurs in an electrolytic cell. The molar mass of an electron is

5.485 \times 10^{-4}\,\text{g\,mol}^{-1}

. Calculate the mass of electrons that are transferred when 0.250 mol of aluminum metal reacts completely.