How much negative charge has been removed from a positively charged electroscope if it has a charge of 7.5×10^-11

I think 4.69 x 108 charges have been removed

step-by-step explanation:

we are given

we have to simplify it

firstly, we will factor it

now, we can cancel like terms

now, we can combine it

so, we get

1/0.14nm = 10^10/1.4 a lot