Question

A flask contains 3.2g of sulphur dioxide. Calculate the following: The number of molecules of sulphur dioxide present in the flask.

Answer 1

Number of molecules = Moles x 6.023 x 10²³
So, number of molecules of SO₂ = O.O5 x 6.023 x 10²³
= 0.30115 x 10²³ = 0.302 x 10²³