8. An ideal gas is contained in a balloon. The gas within the balloon has a…

8. An ideal gas is contained in a balloon. The gas within the
balloon has a mass of 5 g and a molar mass of 30 kg/kmol. The
balloon has an initial diameter of 20 cm and an initial temperature
of 30° C. The gas is expanded through a polytropic process with ? =
1.1. This process increases the diameter of the balloon to 30 cm.
Determine the pressure of the gas inside the balloon at the final
state.
Note: The total mass within the balloon is constant. Express
your final answer in kPa.