What fraction of the electrons have been removed

Reference no: EM13254154

A copper (cu) penny has a mass of 3.11 g. The molar mass of copper is 63.5 g/mol. How many atoms of Cu are there ? How many electrons are there ? If the penny has a charge of + 1.15x10^-7 c, what fraction of the electrons have been removed?

Reference no: EM13254154

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