Question

If an object of mass 1 kg contains 4 x 1020 atoms.
If one electron is removed from every atom of
the solid, the charge gained by the solid in 1 gis
a) 2.80
b) 6.4 x 10-20
c) 3.6 × 10-30
d) 9.2 x 10-4C

plz give me correct answer with explanation​

Answer 1

Answer:

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➡ correct answer is (b)

$6.4 \times 10 {}^{ - 2} c$

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➡ Number of electrons removed = numbers of atoms in 1g .

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$of \: an = \frac{4 \times 10 {}^{20} }{10 {}^{2} } = 4 \times 10 {}^{17} \\ ➡therefore \: charge \: of \: q = \\ 4 \times 10 {}^{17} \times 1.6 \times 10 {}^{ - 19} \\ = 6.4 \times 10 {}^{ - 2} c$

Explanation:

Hope I help you!!