A 37 g ball of copper has a net charge of 3.0 C. What fraction of...

 

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A 37 g ball of copper has a net charge of 3.0 C. What fraction of the copper's electrons have been removed? (Each neutral copper atom has 29 protons and 29 electrons, and copper has an atomic mass of 63.5 a.m.u.) Hint . Also, the elementary charge (magnitude of the electron charge) is e = 1.602 x 10-1 C and 1 a.m.u. is 1.661 10-24 g. (We won't get into how it was defined, since it involves moles and Avogadro's number.) The fraction of electrons removed is A 37 g ball of copper has a net charge of 3.0 C. What fraction of the copper's electrons have been removed? (Each neutral copper atom has 29 protons and 29 electrons, and copper has an atomic mass of 63.5 a.m.u.) Hint . Also, the elementary charge (magnitude of the electron charge) is e = 1.602 x 10-1 C and 1 a.m.u. is 1.661 10-24 g. (We won't get into how it was defined, since it involves moles and Avogadro's number.) The fraction of electrons removed is