Question

how many moles of electrons weigh one kilogram

Answer 1

1 mole of any substance contains 6.022 x 10^23 particles of it. So, if 5.4x10^-7 kg contains 1 mol electrons, How many moles of electrons do 1 kg of electrons contain? Ans: 1.8x10^6 moles of electrons weigh 1 kg.

Answer 2

Hey !!

18 g of H₂O contains

  = 10 mole electrons

  = 10 × 6.023 × 10²³ electrons

10 g of H₂O will contain

           = 10 × 10 × 6.023 × 10²³  / 18 electrons

           = 6.023 × 10²³ / 18 electrons.

Good luck !!