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Q.

The mass and charge of one mole of electrons, respectively is

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a

5.48 × 10^–7 Kg; 9.65 × 10⁴ Coulomb

b

54.8 × 10^–7 Kg; 9.65 × 10⁴ Coulomb

c

5.48 × 10^–7 g; 9.65 × 10⁴ Coulomb

d

5.48 × 10^–7 Kg; 9.65 × 10³ Coulomb

answer is D.

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Detailed Solution

Mass of one mole of electrons = $\large 6.023 \times 10^{23} \times 9.1 \times 10^{-28}g$

$\large = 0.55 \times 10^{-3}g$

$\large = 0.55 \times 10^{-6}Kg$

$\large =5.5 \times 10^{-7}Kg$

Charge of one mole of electrons = $\large 6.023 \times 10^{23} \times 1.602 \times 10^{-19}$

= 96500c

= $\large 9.65 \times 10^4 c$

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