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How many moles of electrons weigh 1 kg?...

How many moles of electrons weigh `1 kg`?

A

`6.023 xx 10^(23)`

B

`(1)/(9.108) xx 10^(31)`

C

`(6.023)/(9.108) xx 10^(54)`

D

`(1)/(9.108 xx 6.023) xx 10^(8)`

Text Solution

Verified by Experts

The correct Answer is:
D
Number of `e^(-)` weighing 1kg `= (1)/(9.108 xx 10^(-31) kg) = (1)/(9.108) xx 10^(31)`
Number of moles of `e^(-) = (1)/(9.108 xx 6.023) xx (10^(31))/(10^(23)) = (1)/(9.108 xx 6.023) xx 10^(8)`
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