4.92x1022 atoms Na = mol Na2O Please let me know how you solved it also, requires work to be shown

0.41mole

Explanation:

Given quantity:

           Number of atoms of Na  = 4.92 x 10²² atoms

Number of moles in this atom;

      6.02 x 10²³ atoms is found in 1 mole of a substance

     4.92 x 10²² atoms will have   = 0.82 x 10⁻¹   = 0.082mole

So;

      In Na₂O;

          2 mole of Na is found in 1 mole of Na₂O

         0.82mole of Na will be found in  mole of Na₂O = 0.41mole of Na₂O

i believe it is a.) released into

explanation:

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error