Question

what is the weight of 1 mole of electron

Answer 1

m = 9.1*10^-31*6.023*10^23

Answer 2

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.