Explanation:
you can use proportions to convert molecules to moles and then moles to grams.
To convert molecules to moles, use the Avogadro number (6,022 × 10²³ atoms)
The proportion is:
1 : Avogadro number = x : number of molecules
so
1 : 6,022 × 10²³ = x : 4,5 × 10²⁴
solve. x = 7,47 moles
From the moles you can get the grams of SO2. To find grams, first find the mass of SO2.
S = 32,06
O2 = (16×2) = 32
so mass of SO2 is 64,06
Now use the proportion:
mass of SO2 : 1 = moles : x
so
64,06 : 1 = 7,47 : x
solve. x = 0,11 grams