A helium-filled weather balloon has a 0.90 m radius at liftoff where air pressure is 1.0 atm and the temperature is 298 K.When airborne,the temperature is 210 K,and its radius expands to 3.0 m.What is the pressure at the airborne location?
A) 0.50 atm
B) 0.013 atm
C) 0.019 atm
D) 0.38 atm
Correct Answer:
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