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Q.

The mass of a mole of hydrogen atoms is

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a

1.008 amu

b

1.008 g 

c

6.02 ×1023 g

d

2.016 g

answer is C.

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Detailed Solution

  •  The mass of a mole of hydrogen atoms is 6.02 ×1023 g.

 We know that the mass of a mole of a substance is equal to the product of the molecular mass of the substance and the Avogadro number.

Now, for a hydrogen atom, the molecular mass is precisely 1.008g. Thus the mass of a mole of a hydrogen atom is 1.008×6.02 ×1023 g, which is approximately 6.02 ×1023 g.

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