Question

if the mass of one electron is 9.11×10^-26 g them how many electrons will be there in 1g of electrons?​

Answer 1

Given :

mass of an electron=9.11 x 10⁻³¹kg =9.11 x 10⁻²⁸g 1kg=1000g Number of electrons present in 1kg will be : =1000/9.11 x 10⁻²⁸ =109.76 x 10 ²⁸

∴ Number of electrons present in 1kg would be 109.