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A 52.0 g ball of copper has a net charge of 2.1 µC. What fraction of the copper's electrons have been removed? (Each copper atom has 29 protons, and copper has an atomic mass of 63.5.)

  • physics -

    number electrons removed=2.1microC*/charge on one electron

    original number elecrons:

    number moles*avagrado's number*29


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