Question

The number of molecules in 16 grams of sulphur dioxide are......plz elaborate

Answer 1

Molecular mass of SO2 =32+16×2=32+32=64. Given mass= 16g. No. of moles of SO2 =16/64=1/4. 1 mole of SO2 has 6.022×10^23 molecules. 1/4 mole of SO2 has. 1/4 ×6.022×10^23 molecules which is approximately 1.5 × 10^23 molecules