Question

Calculate the average kind EE erage kinetic energy per molecule of CO2 when the gas is at glemperatus 50"C and pressure 2.00 atm. Molecular mass of CO2- 44

Answer 1

Answer : The average kinetic energy per molecule is,
`6.6861* 10^(-21)J`

Explanation :

The formula for average kinetic energy per molecule is:

`K.E=(3)/(2)kT`

where,

k = Boltzmann’s constant =
`1.38* 10^(-23)J/K`

T = temperature =
`50^oC=273+50=323K`

Now put all the given values in the above average kinetic energy formula, we get:

`K.E=(3)/(2)* (1.38* 10^(-23)J/K)* (323K)`

`K.E=6.6861* 10^(-21)J`

Therefore, the average kinetic energy per molecule is,
`6.6861* 10^(-21)J`