Question

If mass of an electron is 9×10 to the power - 28 gram , weight of one mole of electron is

Answer 1

mass of one mole of electron
=(6.023 into 10^23)(9into 10^-28)
=5.4 into 10^-5 gram
now weight of 1 mole of electron
=5.4.10^-5 into 9.8 gram
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Answer 2

hope it will help u mate 1 electron has a mass of 9.1 X 10¯³¹ kg. 1 mole has 6.023 x 10²³ particles. So 1 mole of electrons has a mass of 9.1 X 10¯³¹ x 6.023 x 10²³ ≈ 5.481 X 10^(-7) kg.