Question

Calculate the number of atoms in 12.2 litres of the below gas at NTP
(i) mono-atomic
(ii) diatomic gas

Answer 1

Explanation:

(i) 22.7 L of monoatomic gas at NTP = 1mol of monoatomic gas

12.2L of monoatomic gas at NTP =( 1/22.7L)×(12.2L)

= 0.53 mol

=3.19×10^23 molecules

(ii) 22.7 L of diatomic gas at NTP = 1mol

12.2 L of diatomic gas at NTP = 0.53 mol

= 3.19×10^23×2 = 6.38×10^23 atoms of diatomic gas