0.482% of the electrons are removed from a 10.0 mg sphere of iron (Z=26,A=56),resulting in a net charge on the sphere.What is the net charge on the iron sphere?

Question

Quizplus · Accepted Answer

To find the net charge, calculate the number of electrons removed: 0.482% of the total electrons in the sphere. First, find the number of moles of iron: 10 mg = 0.01 g, and with molar mass 56 g/mol, it is 0.01/56 moles. Multiply by Avogadro's number (6.022 x 10^23) to get the number of atoms, then multiply by 26 (number of electrons per atom) to get total electrons. Remove 0.482% of these electrons and multiply by the charge of an electron (1.6 x 10^-19 C) to find the net charge, which is approximately 2.2 C.

0482% of the Electrons Are Removed from a 10