Space Cadet Katrina wants to keep some leaking poison gases from escaping from the science lab on her space station. She knows

Question

Space Cadet Katrina wants to keep some leaking poison gases from escaping from the science lab on her space station. She knows that if she can reduce the pressure of the air in the lab, it will help keep bad air from flowing out into the rest of the station. She cannot manipulate the pressure directly, but she can control the air conditioning remotely. The pressure in the lab is currently 20 lbs/in² and the temperature is 27°C. She won't feel safe until she reduces the pressure to 8 lbs/in². To what temperature must she cool the lab? Assume constant volume. ANS: (t1 = 300 K = 27°C) (12= 120 K = -153°C)

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