Question

calculate the number of atom in 11.2 liter of so2 gas at STP

Answer 1

We know that, no of atoms in one mole = 6.022×10^23

1 molecule of SO2 gas contains 3 atoms ( 1+2)

So, no. of atoms in 1 mole of SO2 = 3× 6.022×10^23

➡ 22.4 L = 1 mol
so, 11.2 L = 1/2 mol

No. of atoms in 1/2 mol of SO2 = 3×6.022 × 10^23 × 1/2
= 9.033 × 10^22 atoms