A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25 °C. With pressure and temperature held constant, what will be the volume (in L) of the balloon if 0.80 moles of gas are added?

We know, when temperature and pressure is constant :

     ....1)

Let, final volume is .

Putting all values in equation 1), we get :

Therefore, volume (in L) of the balloon if 0.80 moles of gas are added is 1.9 L.

Hence, this is the required solution.

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.