Question

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Answer 1

$\frac{1}{1.6} \times {10}^{ - 19}$

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Answer 2

hey mate

the number of electrons in one coulomb of charge is

Q=ne

where q is charge and e is electron charge

electron charge is 1.6×10^-19

n is equal to number of electrons

n=Q/e

where given q is equal to 1

so 1/1.6×10^-19=6.25×10^18