Q.

Number of atoms in 558.5 gram Fe (at wt of Fe=55.85 g mol-1) is

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a

Half that in 8g He

b

558.6×6.023×1023

c

6.023×1022

d

Twice that of 60 g of carbon

answer is A.

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Detailed Solution

558.5 g of Fe contains 10N atoms
60 g of C contains 5N atoms, twice of that means 10 N Atoms

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Number of atoms in 558.5 gram Fe (at wt of Fe=55.85 g mol-1) is