What is the difference between this two questions:
a)how many atoms of Helium are present in 100 amu of Helium.
b)calculate number of atoms present in 100 amu of Helium.

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Solution

Dear student

There is no difference in the questions. They are same.
Mass of one atom of Helium = 4 a.m.u.

So, in 100 a.m.u. number of helium atoms= 100/4 = 25

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