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Working with charge of protons and electrons

Find the total electric charge of 1 kg of (a) electrons and (b) protons.

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Mass of one electron = 9.1 à? 10^-31 kg

Mass of one proton = 1.67 à? 10^-27 kg

Number of electrons in 1 kg electron = 1/9.1 à? 10^-31 ...

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