Question

Calculate the number of molecules in 0.5 mol of sulfur dioxide, SO2.

Answer 1

We know, 1 mole of any element/compound contains 6.022 × 10²³ atoms/molecules .

Now, we have to calculate the number of molecules in 0.5 mole of sulfur dioxide, SO₂.

So, number of molecules of SO₂ in 0.5 mole is :

$n = 0.5\times 6.022\times 10^{23}\\\\n = 3.011\times 10^{23}$

Therefore, number of molecules in 0.5 mole of SO₂ is 3.011 × 10²³.