Question

What is the number of atoms in 52u of Helium?

Answer:

13 atoms are present in 52u of Helium.

We know that the atomic mass of Helium = 4u
Therefore, in 4u of Helium, 1 atom is present and so, in 4*13 = 52u of Helium, we will have 1*13 = 13 atoms.


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