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Q.

Number of atoms in 560 g of Fe (atomic mass $56 g {mol}^{- 1}$ ) is:

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a

twice that of 70g N

b

both (a) and (b)

c

none of these

d

half that of 20 g H

answer is C.

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Detailed Solution

Number of atom in all atoms;

$n_{Fe} = \frac{560}{56}; n_{N} = \frac{70}{14}; n_{H} = \frac{20}{1}$

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