A given sample of sulphur contains 0.25 mol of sulphur molecules. The number of moles of sulphur atoms , number of sulphur molecules and number of sulphur atoms present in the given sample are respectively ?

1 mole sulphur – 8 moles of sulphur atoms
0.25 moles sulphur – x
 $\mathrm{x}=8\times 0.25=$2 moles of sulphur atoms
1 mole sulphur -  $6.023\times {10}^{23}$ sulphur molecules
0.25 moles of sulphur – y
 $\mathrm{y}=6.023\times 0.25\times {10}^{23}=1.5\times {10}^3\mathrm{molecules}$
1 mole of sulphur -  $8\times 6.023\times {10}^{23}\mathrm{atoms}$
0.25 moles of sulphur – Z
$\mathrm{Z}=8\times 6.023\times 0.25\times {10}^{23}=1.246\times {10}^{24}\mathrm{atoms}$