Physics
Physics, 29.07.2019 16:30, holman6884

Hi with this question! need the workings. a copper penny has a mass of 2.6 g assuming it is pure copper, how much of this mass is contributed by a) the neutrons in the copper nuclei b) the electrons. the answers are a) 1.41 g b) 6.5 x 10^-4,

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Hi with this question! need the workings. a copper penny has a mass of 2.6 g assuming it is pure...

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