Question

what is the number of molecules in 16 gram of sulfur dioxide (SO2)​

Answer 1

Answer:

Molar mass of SO2 is 64grams

Therefore 16g of SO2 means 0.25 mole of SO2

Now, by Avogadro’s number, 1 mole of any substance has 6.022 x 10^23 molecules in it

Hence, 0.25 mol of SO2 will have 1.5055 x 10^23 molecules