Question

2)calculate no of atoms in 100g of sulpur dioxide

Answer 1

Answer:

3× (6.023× 10^23)×1.5625 (simply using calculator)

Explanation:

Total mass = 100 gm

Molecular mass of SO2 = 32+(16×2) = 64 gm

No. of moles = given mass/ molecular mass = 100gm/ 64 gm = 1.5625

Now, we get 100 gm of SO2 have 1.5625 mole of SO2 molecules. Also 1 molecule of SO2 consists of 3 atoms ( 1 Sulphur and 2 Oxygen)

So, 1.5625 mole of SO2

= 1.5625×6.023× 10^23 no. of molecules

= 3× (6.023× 10^23)×1.5625 no. of atoms

=please calculate further .