Question

How much charge in coulomb if 25 X 1018 electron transfer from a substance?​

Answer 1

GIVEN:

Number of electrons, n = 25 × 10¹⁸ electrons

TO FIND:

Charge , q

FORMULA:

Charge, q = ne

Where e is the charge of single electron

e = 1.6 × 10^-19 coulomb

SOLUTION:

$q = ne \\ \\ q = 25 \times {10}^{18} \times 1.6 \times {10}^{ - 19} \\ \\ q = 25 \times 1.6 \times {10}^{(18 - 19)} \\ \\ = 25 \times 1.6 \times {10}^{ - 1} \\ \\ = 40 \times \frac{1}{10} \\ \\ q = 4 \: coulomb$

ANSWER:

THE CHARGE OF THE ELECTRONS TRANSFERRED IS 4 C

Answer 2

GIVEN:

Number of electrons, n = 25 × 10¹⁸ electrons

TO FIND:

Charge , q

FORMULA:

Charge, q = ne

Where e is the charge of single electron

e = 1.6 × 10^-19 coulomb

SOLUTION:

q = ne

Q = 4 coulomb

THE CHARGE OF THE ELECTRONS TRANSFERRED IS 4 C..

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