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9.11 x 10-31 kg = weight of 1 electron.
Therefore, 1 kg = 1/(9.11 x 10-31 electrons) = 1 x 1032 electrons.
which is = 1032/(6.023 * 1023) moles of electron
0.166 x 109 moles
or, 1.66 x 108 moles of electrons