The volume of the vacuum chamber is 27.1 ∙ 103 m3. Before emptying the chamber, it is filled with air
with a density of 1.25 kg / m3. The pressure in the chamber is 101 kPa here. The temperature in the chamber is constant during pumping, and after
the pumping, there is only 0.70 kg of air left in
the chamber.

a) Calculate the temperature of the air in the chamber
and the pressure in the chamber after pumping.