Question

4.92x1022 atoms Na = _____ mol Na2O

Please let me know how you solved it also, requires work to be shown

Answer 1

0.41mole

Step-by-step 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
`(4.92 x 10^(22) )/(6.02 x 10^(23) )` = 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
`(0.82)/(2)` mole of Na₂O = 0.41mole of Na₂O