ChemistryThe number of atoms in 16u of He is ____ atoms.

The number of atoms in 16u of He is ____ atoms.


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    Solution:

    The number of atoms in 16u of He is 4 atoms.
    Since 4u is a mass of one atom of He. The 1 atom contains a unified mass of an atom which is 4u of He. Hence the number of atoms in 16u of He is calculated as follows
    16u He×1 atom4u He=4 atom
    Hence, there are 4 atoms in 16u of He.
     
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