Physics - Heat & Thermo Question with Solution | TestHub

One mole of diatomic gas is being heated in a closed tank from 300 K up to 1000 K. During the process part of the molecules dissociate. At 1000 K the energy of the diatomic molecules is only half of that of the whole gas. By what factor has the gas pressure increased $\left({\mathrm{P}}_{\text{final }}/{\mathrm{P}}_{\text{initial }}\right)$ ? (The oscillation of the molecules is not to be taken into account.)