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13 October, 21:18

The mass of half mole of electrons is about

(mass of electron = 9.1 * 10^-28g)

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  1. 13 October, 21:39
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    One electron has a mass of 9.10938291 x 10^ - 31 kg. One mole of electrons contains 6.022x10^23 electrons where half of a mole is has 3.011x10^23 electrons. Therefore, the mass of half a mole of electrons would be 2.74x10^-7. Hope this answers the question. Have a nice day.
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