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Q.

How many moles of proton weigh 1 Kg?

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a

$10^{3}$

b

$N_{A}$

c

$\frac{1}{N_{A}} \times 10^{3}$

d

$\frac{10^{8}}{9.11 \times 6.022}$

answer is A.

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Detailed Solution

There are $10^{3}$ moles of proton weigh 1 Kg

Weight of 1 proton $= \frac{1}{N_{A}} gm$

Weight of 1 mole proton $= 1 g m$

Number of moles of proton $= \frac{1000}{1} = 10^{3}$

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