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Q.

1 mole of iron weighs

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a

28g

b

56g

c

50g

d

21g

answer is B.

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Detailed Solution

1 mole of iron weighs 56g since the gram molar mass of iron(Fe) is 56 g, For any substance gram molar mass indicates Avogadro number of particles.

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1 mole of iron weighs