Answer :

Willchemistry
1 mol ----------- 6.02 x 10²³ atoms Na
( mols Na) ------ 9.8 x 10²³ atoms Na

( mols Na ) = ( 9.8 x 10²³ ) x 1 / 6.02 x 10²³

( mols Na) = 9.8 x 10²³ / 6.02 x 10²³

= 1.6 mols Na

hope this helps!

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