Numericals on charge

1.find the number of electrons in 1 col of charge?
2.find charge when 1 electron is flowing in the conductor?
3.find total no of electrons flowing when 6023 col of charge is present in conductor?
4.find no. Of electrons present in 2 col .of charge?
5.find charge of electron when 10 power 23 electrons carry 6.023 col of charge?
In all above numericals take charge of electron 6.023×10 power negaative 23 col
6.find number of electrons present in 3.2 c of charge
7.find umber of electrons present in 6.4 c of charge
8.find charge if 10 power 19 electrons are flowing in conductor
9.find charge if avagadro number of elecyrons are flowing im conductor
10.find charge if 10 power 20 electrons are flowing in comdictor
11.using coloumbs inverse square law  find force between 2 charges of 10 c and 20 c present at 2 m distance
12.find number of electrons if 1600 c of sharge present in cinductor
13.using columbs inverse suare law finf force between 2 charges 1 c and 2c separated by 2mm distance
14.if 1/4 pi e0 value is 9×10power 9
Find value of e0